From 0883743825e34b81f3ff78aaee3a97cba57586c5 Mon Sep 17 00:00:00 2001 From: Rajiv Andrade Date: Mon, 2 Feb 2009 15:23:43 -0200 Subject: TPM: sysfs functions consolidation According to Dave Hansen's comments on the tpm_show_*, some of these functions present a pattern when allocating data[] memory space and also when setting its content. A new function was created so that this pattern could be consolidated. Also, replaced the data[] command vectors and its indexes by meaningful structures as pointed out by Matt Helsley too. Signed-off-by: Rajiv Andrade Signed-off-by: James Morris --- drivers/char/tpm/tpm.c | 411 +++++++++++++++++-------------------------------- drivers/char/tpm/tpm.h | 124 +++++++++++++++ 2 files changed, 266 insertions(+), 269 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 9c47dc48c9fd..9b9eb761cba9 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -429,134 +429,148 @@ out: #define TPM_DIGEST_SIZE 20 #define TPM_ERROR_SIZE 10 #define TPM_RET_CODE_IDX 6 -#define TPM_GET_CAP_RET_SIZE_IDX 10 -#define TPM_GET_CAP_RET_UINT32_1_IDX 14 -#define TPM_GET_CAP_RET_UINT32_2_IDX 18 -#define TPM_GET_CAP_RET_UINT32_3_IDX 22 -#define TPM_GET_CAP_RET_UINT32_4_IDX 26 -#define TPM_GET_CAP_PERM_DISABLE_IDX 16 -#define TPM_GET_CAP_PERM_INACTIVE_IDX 18 -#define TPM_GET_CAP_RET_BOOL_1_IDX 14 -#define TPM_GET_CAP_TEMP_INACTIVE_IDX 16 - -#define TPM_CAP_IDX 13 -#define TPM_CAP_SUBCAP_IDX 21 enum tpm_capabilities { - TPM_CAP_FLAG = 4, - TPM_CAP_PROP = 5, + TPM_CAP_FLAG = cpu_to_be32(4), + TPM_CAP_PROP = cpu_to_be32(5), + CAP_VERSION_1_1 = cpu_to_be32(0x06), + CAP_VERSION_1_2 = cpu_to_be32(0x1A) }; enum tpm_sub_capabilities { - TPM_CAP_PROP_PCR = 0x1, - TPM_CAP_PROP_MANUFACTURER = 0x3, - TPM_CAP_FLAG_PERM = 0x8, - TPM_CAP_FLAG_VOL = 0x9, - TPM_CAP_PROP_OWNER = 0x11, - TPM_CAP_PROP_TIS_TIMEOUT = 0x15, - TPM_CAP_PROP_TIS_DURATION = 0x20, -}; + TPM_CAP_PROP_PCR = cpu_to_be32(0x101), + TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103), + TPM_CAP_FLAG_PERM = cpu_to_be32(0x108), + TPM_CAP_FLAG_VOL = cpu_to_be32(0x109), + TPM_CAP_PROP_OWNER = cpu_to_be32(0x111), + TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115), + TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120), -/* - * This is a semi generic GetCapability command for use - * with the capability type TPM_CAP_PROP or TPM_CAP_FLAG - * and their associated sub_capabilities. - */ - -static const u8 tpm_cap[] = { - 0, 193, /* TPM_TAG_RQU_COMMAND */ - 0, 0, 0, 22, /* length */ - 0, 0, 0, 101, /* TPM_ORD_GetCapability */ - 0, 0, 0, 0, /* TPM_CAP_ */ - 0, 0, 0, 4, /* TPM_CAP_SUB_ size */ - 0, 0, 1, 0 /* TPM_CAP_SUB_ */ }; -static ssize_t transmit_cmd(struct tpm_chip *chip, u8 *data, int len, - char *desc) +static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd, + int len, const char *desc) { int err; - len = tpm_transmit(chip, data, len); + len = tpm_transmit(chip,(u8 *) cmd, len); if (len < 0) return len; if (len == TPM_ERROR_SIZE) { - err = be32_to_cpu(*((__be32 *) (data + TPM_RET_CODE_IDX))); + err = be32_to_cpu(cmd->header.out.return_code); dev_dbg(chip->dev, "A TPM error (%d) occurred %s\n", err, desc); return err; } return 0; } +#define TPM_INTERNAL_RESULT_SIZE 200 +#define TPM_TAG_RQU_COMMAND cpu_to_be16(193) +#define TPM_ORD_GET_CAP cpu_to_be32(101) + +static const struct tpm_input_header tpm_getcap_header = { + .tag = TPM_TAG_RQU_COMMAND, + .length = cpu_to_be32(22), + .ordinal = TPM_ORD_GET_CAP +}; + +ssize_t tpm_getcap(struct device *dev, __be32 subcap_id, cap_t *cap, + const char *desc) +{ + struct tpm_cmd_t tpm_cmd; + int rc; + struct tpm_chip *chip = dev_get_drvdata(dev); + + tpm_cmd.header.in = tpm_getcap_header; + if (subcap_id == CAP_VERSION_1_1 || subcap_id == CAP_VERSION_1_2) { + tpm_cmd.params.getcap_in.cap = subcap_id; + /*subcap field not necessary */ + tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(0); + tpm_cmd.header.in.length -= cpu_to_be32(sizeof(__be32)); + } else { + if (subcap_id == TPM_CAP_FLAG_PERM || + subcap_id == TPM_CAP_FLAG_VOL) + tpm_cmd.params.getcap_in.cap = TPM_CAP_FLAG; + else + tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP; + tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4); + tpm_cmd.params.getcap_in.subcap = subcap_id; + } + rc = transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, desc); + if (!rc) + *cap = tpm_cmd.params.getcap_out.cap; + return rc; +} + void tpm_gen_interrupt(struct tpm_chip *chip) { - u8 data[max_t(int, ARRAY_SIZE(tpm_cap), 30)]; + struct tpm_cmd_t tpm_cmd; ssize_t rc; - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_TIS_TIMEOUT; + tpm_cmd.header.in = tpm_getcap_header; + tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP; + tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4); + tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT; - rc = transmit_cmd(chip, data, sizeof(data), + rc = transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, "attempting to determine the timeouts"); } EXPORT_SYMBOL_GPL(tpm_gen_interrupt); void tpm_get_timeouts(struct tpm_chip *chip) { - u8 data[max_t(int, ARRAY_SIZE(tpm_cap), 30)]; + struct tpm_cmd_t tpm_cmd; + struct timeout_t *timeout_cap; + struct duration_t *duration_cap; ssize_t rc; u32 timeout; - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_TIS_TIMEOUT; + tpm_cmd.header.in = tpm_getcap_header; + tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP; + tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4); + tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT; - rc = transmit_cmd(chip, data, sizeof(data), + rc = transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, "attempting to determine the timeouts"); if (rc) goto duration; - if (be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_SIZE_IDX))) + if (be32_to_cpu(tpm_cmd.header.out.length) != 4 * sizeof(u32)) goto duration; + timeout_cap = &tpm_cmd.params.getcap_out.cap.timeout; /* Don't overwrite default if value is 0 */ - timeout = - be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX))); + timeout = be32_to_cpu(timeout_cap->a); if (timeout) chip->vendor.timeout_a = usecs_to_jiffies(timeout); - timeout = - be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_2_IDX))); + timeout = be32_to_cpu(timeout_cap->b); if (timeout) chip->vendor.timeout_b = usecs_to_jiffies(timeout); - timeout = - be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_3_IDX))); + timeout = be32_to_cpu(timeout_cap->c); if (timeout) chip->vendor.timeout_c = usecs_to_jiffies(timeout); - timeout = - be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_4_IDX))); + timeout = be32_to_cpu(timeout_cap->d); if (timeout) chip->vendor.timeout_d = usecs_to_jiffies(timeout); duration: - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_TIS_DURATION; + tpm_cmd.header.in = tpm_getcap_header; + tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP; + tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4); + tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_DURATION; - rc = transmit_cmd(chip, data, sizeof(data), + rc = transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, "attempting to determine the durations"); if (rc) return; - if (be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_SIZE_IDX))) + if (be32_to_cpu(tpm_cmd.header.out.return_code) != 3 * sizeof(u32)) return; - + duration_cap = &tpm_cmd.params.getcap_out.cap.duration; chip->vendor.duration[TPM_SHORT] = - usecs_to_jiffies(be32_to_cpu - (*((__be32 *) (data + - TPM_GET_CAP_RET_UINT32_1_IDX)))); + usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_short)); /* The Broadcom BCM0102 chipset in a Dell Latitude D820 gets the above * value wrong and apparently reports msecs rather than usecs. So we * fix up the resulting too-small TPM_SHORT value to make things work. @@ -565,13 +579,9 @@ duration: chip->vendor.duration[TPM_SHORT] = HZ; chip->vendor.duration[TPM_MEDIUM] = - usecs_to_jiffies(be32_to_cpu - (*((__be32 *) (data + - TPM_GET_CAP_RET_UINT32_2_IDX)))); + usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_medium)); chip->vendor.duration[TPM_LONG] = - usecs_to_jiffies(be32_to_cpu - (*((__be32 *) (data + - TPM_GET_CAP_RET_UINT32_3_IDX)))); + usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_long)); } EXPORT_SYMBOL_GPL(tpm_get_timeouts); @@ -587,36 +597,18 @@ void tpm_continue_selftest(struct tpm_chip *chip) } EXPORT_SYMBOL_GPL(tpm_continue_selftest); -#define TPM_INTERNAL_RESULT_SIZE 200 - ssize_t tpm_show_enabled(struct device * dev, struct device_attribute * attr, char *buf) { - u8 *data; + cap_t cap; ssize_t rc; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_FLAG; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_FLAG_PERM; - - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, - "attemtping to determine the permanent enabled state"); - if (rc) { - kfree(data); + rc = tpm_getcap(dev, TPM_CAP_FLAG_PERM, &cap, + "attempting to determine the permanent enabled state"); + if (rc) return 0; - } - - rc = sprintf(buf, "%d\n", !data[TPM_GET_CAP_PERM_DISABLE_IDX]); - kfree(data); + rc = sprintf(buf, "%d\n", !cap.perm_flags.disable); return rc; } EXPORT_SYMBOL_GPL(tpm_show_enabled); @@ -624,31 +616,15 @@ EXPORT_SYMBOL_GPL(tpm_show_enabled); ssize_t tpm_show_active(struct device * dev, struct device_attribute * attr, char *buf) { - u8 *data; + cap_t cap; ssize_t rc; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_FLAG; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_FLAG_PERM; - - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, - "attemtping to determine the permanent active state"); - if (rc) { - kfree(data); + rc = tpm_getcap(dev, TPM_CAP_FLAG_PERM, &cap, + "attempting to determine the permanent active state"); + if (rc) return 0; - } - rc = sprintf(buf, "%d\n", !data[TPM_GET_CAP_PERM_INACTIVE_IDX]); - - kfree(data); + rc = sprintf(buf, "%d\n", !cap.perm_flags.deactivated); return rc; } EXPORT_SYMBOL_GPL(tpm_show_active); @@ -656,31 +632,15 @@ EXPORT_SYMBOL_GPL(tpm_show_active); ssize_t tpm_show_owned(struct device * dev, struct device_attribute * attr, char *buf) { - u8 *data; + cap_t cap; ssize_t rc; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_OWNER; - - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, - "attempting to determine the owner state"); - if (rc) { - kfree(data); + rc = tpm_getcap(dev, TPM_CAP_PROP_OWNER, &cap, + "attempting to determine the owner state"); + if (rc) return 0; - } - - rc = sprintf(buf, "%d\n", data[TPM_GET_CAP_RET_BOOL_1_IDX]); - kfree(data); + rc = sprintf(buf, "%d\n", cap.owned); return rc; } EXPORT_SYMBOL_GPL(tpm_show_owned); @@ -688,31 +648,15 @@ EXPORT_SYMBOL_GPL(tpm_show_owned); ssize_t tpm_show_temp_deactivated(struct device * dev, struct device_attribute * attr, char *buf) { - u8 *data; + cap_t cap; ssize_t rc; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_FLAG; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_FLAG_VOL; - - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, - "attempting to determine the temporary state"); - if (rc) { - kfree(data); + rc = tpm_getcap(dev, TPM_CAP_FLAG_VOL, &cap, + "attempting to determine the temporary state"); + if (rc) return 0; - } - rc = sprintf(buf, "%d\n", data[TPM_GET_CAP_TEMP_INACTIVE_IDX]); - - kfree(data); + rc = sprintf(buf, "%d\n", cap.stclear_flags.deactivated); return rc; } EXPORT_SYMBOL_GPL(tpm_show_temp_deactivated); @@ -727,77 +671,64 @@ static const u8 pcrread[] = { ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, char *buf) { + cap_t cap; u8 *data; ssize_t rc; int i, j, num_pcrs; __be32 index; char *str = buf; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); if (!data) return -ENOMEM; - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_PCR; - - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, + rc = tpm_getcap(dev, TPM_CAP_PROP_PCR, &cap, "attempting to determine the number of PCRS"); - if (rc) { - kfree(data); + if (rc) return 0; - } - num_pcrs = be32_to_cpu(*((__be32 *) (data + 14))); + num_pcrs = be32_to_cpu(cap.num_pcrs); for (i = 0; i < num_pcrs; i++) { memcpy(data, pcrread, sizeof(pcrread)); index = cpu_to_be32(i); memcpy(data + 10, &index, 4); - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, - "attempting to read a PCR"); + rc = transmit_cmd(chip, (struct tpm_cmd_t *)data, + TPM_INTERNAL_RESULT_SIZE, + "attempting to read a PCR"); if (rc) - goto out; + break; str += sprintf(str, "PCR-%02d: ", i); for (j = 0; j < TPM_DIGEST_SIZE; j++) str += sprintf(str, "%02X ", *(data + 10 + j)); str += sprintf(str, "\n"); } -out: kfree(data); return str - buf; } EXPORT_SYMBOL_GPL(tpm_show_pcrs); #define READ_PUBEK_RESULT_SIZE 314 -static const u8 readpubek[] = { - 0, 193, /* TPM_TAG_RQU_COMMAND */ - 0, 0, 0, 30, /* length */ - 0, 0, 0, 124, /* TPM_ORD_ReadPubek */ +#define TPM_ORD_READPUBEK cpu_to_be32(124) +struct tpm_input_header tpm_readpubek_header = { + .tag = TPM_TAG_RQU_COMMAND, + .length = cpu_to_be32(30), + .ordinal = TPM_ORD_READPUBEK }; ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr, char *buf) { u8 *data; + struct tpm_cmd_t tpm_cmd; ssize_t err; int i, rc; char *str = buf; struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - data = kzalloc(READ_PUBEK_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, readpubek, sizeof(readpubek)); - - err = transmit_cmd(chip, data, READ_PUBEK_RESULT_SIZE, + tpm_cmd.header.in = tpm_readpubek_header; + err = transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE, "attempting to read the PUBEK"); if (err) goto out; @@ -812,7 +743,7 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr, 256 byte modulus ignore checksum 20 bytes */ - + data = tpm_cmd.params.readpubek_out_buffer; str += sprintf(str, "Algorithm: %02X %02X %02X %02X\nEncscheme: %02X %02X\n" @@ -832,65 +763,33 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr, } out: rc = str - buf; - kfree(data); return rc; } EXPORT_SYMBOL_GPL(tpm_show_pubek); -#define CAP_VERSION_1_1 6 -#define CAP_VERSION_1_2 0x1A -#define CAP_VERSION_IDX 13 -static const u8 cap_version[] = { - 0, 193, /* TPM_TAG_RQU_COMMAND */ - 0, 0, 0, 18, /* length */ - 0, 0, 0, 101, /* TPM_ORD_GetCapability */ - 0, 0, 0, 0, - 0, 0, 0, 0 -}; ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr, char *buf) { - u8 *data; + cap_t cap; ssize_t rc; char *str = buf; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_MANUFACTURER; - - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, + rc = tpm_getcap(dev, TPM_CAP_PROP_MANUFACTURER, &cap, "attempting to determine the manufacturer"); - if (rc) { - kfree(data); + if (rc) return 0; - } - str += sprintf(str, "Manufacturer: 0x%x\n", - be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX)))); + be32_to_cpu(cap.manufacturer_id)); - memcpy(data, cap_version, sizeof(cap_version)); - data[CAP_VERSION_IDX] = CAP_VERSION_1_1; - rc = transmit_cmd(chip, data, TPM_INTERNAL_RESULT_SIZE, - "attempting to determine the 1.1 version"); + rc = tpm_getcap(dev, CAP_VERSION_1_1, &cap, + "attempting to determine the 1.1 version"); if (rc) - goto out; - + return 0; str += sprintf(str, "TCG version: %d.%d\nFirmware version: %d.%d\n", - (int) data[14], (int) data[15], (int) data[16], - (int) data[17]); - -out: - kfree(data); + cap.tpm_version.Major, cap.tpm_version.Minor, + cap.tpm_version.revMajor, cap.tpm_version.revMinor); return str - buf; } EXPORT_SYMBOL_GPL(tpm_show_caps); @@ -898,51 +797,25 @@ EXPORT_SYMBOL_GPL(tpm_show_caps); ssize_t tpm_show_caps_1_2(struct device * dev, struct device_attribute * attr, char *buf) { - u8 *data; - ssize_t len; + cap_t cap; + ssize_t rc; char *str = buf; - struct tpm_chip *chip = dev_get_drvdata(dev); - if (chip == NULL) - return -ENODEV; - - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - - memcpy(data, tpm_cap, sizeof(tpm_cap)); - data[TPM_CAP_IDX] = TPM_CAP_PROP; - data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_MANUFACTURER; - - len = tpm_transmit(chip, data, TPM_INTERNAL_RESULT_SIZE); - if (len <= TPM_ERROR_SIZE) { - dev_dbg(chip->dev, "A TPM error (%d) occurred " - "attempting to determine the manufacturer\n", - be32_to_cpu(*((__be32 *) (data + TPM_RET_CODE_IDX)))); - kfree(data); + rc = tpm_getcap(dev, TPM_CAP_PROP_MANUFACTURER, &cap, + "attempting to determine the manufacturer"); + if (rc) return 0; - } - str += sprintf(str, "Manufacturer: 0x%x\n", - be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX)))); - - memcpy(data, cap_version, sizeof(cap_version)); - data[CAP_VERSION_IDX] = CAP_VERSION_1_2; - - len = tpm_transmit(chip, data, TPM_INTERNAL_RESULT_SIZE); - if (len <= TPM_ERROR_SIZE) { - dev_err(chip->dev, "A TPM error (%d) occurred " - "attempting to determine the 1.2 version\n", - be32_to_cpu(*((__be32 *) (data + TPM_RET_CODE_IDX)))); - goto out; - } + be32_to_cpu(cap.manufacturer_id)); + rc = tpm_getcap(dev, CAP_VERSION_1_2, &cap, + "attempting to determine the 1.2 version"); + if (rc) + return 0; str += sprintf(str, "TCG version: %d.%d\nFirmware version: %d.%d\n", - (int) data[16], (int) data[17], (int) data[18], - (int) data[19]); - -out: - kfree(data); + cap.tpm_version_1_2.Major, cap.tpm_version_1_2.Minor, + cap.tpm_version_1_2.revMajor, + cap.tpm_version_1_2.revMinor); return str - buf; } EXPORT_SYMBOL_GPL(tpm_show_caps_1_2); diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 8e30df4a4388..d64f6b7e5b82 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -123,6 +123,130 @@ static inline void tpm_write_index(int base, int index, int value) outb(index, base); outb(value & 0xFF, base+1); } +struct tpm_input_header { + __be16 tag; + __be32 length; + __be32 ordinal; +}__attribute__((packed)); + +struct tpm_output_header { + __be16 tag; + __be32 length; + __be32 return_code; +}__attribute__((packed)); + +struct stclear_flags_t { + __be16 tag; + u8 deactivated; + u8 disableForceClear; + u8 physicalPresence; + u8 physicalPresenceLock; + u8 bGlobalLock; +}__attribute__((packed)); + +struct tpm_version_t { + u8 Major; + u8 Minor; + u8 revMajor; + u8 revMinor; +}__attribute__((packed)); + +struct tpm_version_1_2_t { + __be16 tag; + u8 Major; + u8 Minor; + u8 revMajor; + u8 revMinor; +}__attribute__((packed)); + +struct timeout_t { + __be32 a; + __be32 b; + __be32 c; + __be32 d; +}__attribute__((packed)); + +struct duration_t { + __be32 tpm_short; + __be32 tpm_medium; + __be32 tpm_long; +}__attribute__((packed)); + +struct permanent_flags_t { + __be16 tag; + u8 disable; + u8 ownership; + u8 deactivated; + u8 readPubek; + u8 disableOwnerClear; + u8 allowMaintenance; + u8 physicalPresenceLifetimeLock; + u8 physicalPresenceHWEnable; + u8 physicalPresenceCMDEnable; + u8 CEKPUsed; + u8 TPMpost; + u8 TPMpostLock; + u8 FIPS; + u8 operator; + u8 enableRevokeEK; + u8 nvLocked; + u8 readSRKPub; + u8 tpmEstablished; + u8 maintenanceDone; + u8 disableFullDALogicInfo; +}__attribute__((packed)); + +typedef union { + struct permanent_flags_t perm_flags; + struct stclear_flags_t stclear_flags; + bool owned; + __be32 num_pcrs; + struct tpm_version_t tpm_version; + struct tpm_version_1_2_t tpm_version_1_2; + __be32 manufacturer_id; + struct timeout_t timeout; + struct duration_t duration; +} cap_t; + +struct tpm_getcap_params_in { + __be32 cap; + __be32 subcap_size; + __be32 subcap; +}__attribute__((packed)); + +struct tpm_getcap_params_out { + __be32 cap_size; + cap_t cap; +}__attribute__((packed)); + +struct tpm_readpubek_params_out { + u8 algorithm[4]; + u8 encscheme[2]; + u8 sigscheme[2]; + u8 parameters[12]; /*assuming RSA*/ + __be32 keysize; + u8 modulus[256]; + u8 checksum[20]; +}__attribute__((packed)); + +typedef union { + struct tpm_input_header in; + struct tpm_output_header out; +} tpm_cmd_header; + +typedef union { + struct tpm_getcap_params_out getcap_out; + struct tpm_readpubek_params_out readpubek_out; + u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)]; + struct tpm_getcap_params_in getcap_in; +} tpm_cmd_params; + +struct tpm_cmd_t { + tpm_cmd_header header; + tpm_cmd_params params; +}__attribute__((packed)); + +ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *); extern void tpm_get_timeouts(struct tpm_chip *); extern void tpm_gen_interrupt(struct tpm_chip *); -- cgit v1.2.3 From 659aaf2bb5496a425ba14036b5b5900f593e4484 Mon Sep 17 00:00:00 2001 From: Rajiv Andrade Date: Mon, 2 Feb 2009 15:23:44 -0200 Subject: TPM: integrity interface This patch adds internal kernel support for: - reading/extending a pcr value - looking up the tpm_chip for a given chip number Signed-off-by: Rajiv Andrade Signed-off-by: Mimi Zohar Signed-off-by: James Morris --- drivers/char/tpm/tpm.c | 129 +++++++++++++++++++++++++++++++++++++++++-------- drivers/char/tpm/tpm.h | 18 +++++++ include/linux/tpm.h | 35 ++++++++++++++ 3 files changed, 163 insertions(+), 19 deletions(-) create mode 100644 include/linux/tpm.h (limited to 'drivers/char') diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 9b9eb761cba9..62a5682578ca 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -661,28 +661,125 @@ ssize_t tpm_show_temp_deactivated(struct device * dev, } EXPORT_SYMBOL_GPL(tpm_show_temp_deactivated); -static const u8 pcrread[] = { - 0, 193, /* TPM_TAG_RQU_COMMAND */ - 0, 0, 0, 14, /* length */ - 0, 0, 0, 21, /* TPM_ORD_PcrRead */ - 0, 0, 0, 0 /* PCR index */ +/* + * tpm_chip_find_get - return tpm_chip for given chip number + */ +static struct tpm_chip *tpm_chip_find_get(int chip_num) +{ + struct tpm_chip *pos; + + rcu_read_lock(); + list_for_each_entry_rcu(pos, &tpm_chip_list, list) { + if (chip_num != TPM_ANY_NUM && chip_num != pos->dev_num) + continue; + + if (try_module_get(pos->dev->driver->owner)) + break; + } + rcu_read_unlock(); + return pos; +} + +#define TPM_ORDINAL_PCRREAD cpu_to_be32(21) +#define READ_PCR_RESULT_SIZE 30 +static struct tpm_input_header pcrread_header = { + .tag = TPM_TAG_RQU_COMMAND, + .length = cpu_to_be32(14), + .ordinal = TPM_ORDINAL_PCRREAD +}; + +int __tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf) +{ + int rc; + struct tpm_cmd_t cmd; + + cmd.header.in = pcrread_header; + cmd.params.pcrread_in.pcr_idx = cpu_to_be32(pcr_idx); + BUILD_BUG_ON(cmd.header.in.length > READ_PCR_RESULT_SIZE); + rc = transmit_cmd(chip, &cmd, cmd.header.in.length, + "attempting to read a pcr value"); + + if (rc == 0) + memcpy(res_buf, cmd.params.pcrread_out.pcr_result, + TPM_DIGEST_SIZE); + return rc; +} + +/** + * tpm_pcr_read - read a pcr value + * @chip_num: tpm idx # or ANY + * @pcr_idx: pcr idx to retrieve + * @res_buf: TPM_PCR value + * size of res_buf is 20 bytes (or NULL if you don't care) + * + * The TPM driver should be built-in, but for whatever reason it + * isn't, protect against the chip disappearing, by incrementing + * the module usage count. + */ +int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) +{ + struct tpm_chip *chip; + int rc; + + chip = tpm_chip_find_get(chip_num); + if (chip == NULL) + return -ENODEV; + rc = __tpm_pcr_read(chip, pcr_idx, res_buf); + module_put(chip->dev->driver->owner); + return rc; +} +EXPORT_SYMBOL_GPL(tpm_pcr_read); + +/** + * tpm_pcr_extend - extend pcr value with hash + * @chip_num: tpm idx # or AN& + * @pcr_idx: pcr idx to extend + * @hash: hash value used to extend pcr value + * + * The TPM driver should be built-in, but for whatever reason it + * isn't, protect against the chip disappearing, by incrementing + * the module usage count. + */ +#define TPM_ORD_PCR_EXTEND cpu_to_be32(20) +#define EXTEND_PCR_SIZE 34 +static struct tpm_input_header pcrextend_header = { + .tag = TPM_TAG_RQU_COMMAND, + .length = cpu_to_be32(34), + .ordinal = TPM_ORD_PCR_EXTEND }; +int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) +{ + struct tpm_cmd_t cmd; + int rc; + struct tpm_chip *chip; + + chip = tpm_chip_find_get(chip_num); + if (chip == NULL) + return -ENODEV; + + cmd.header.in = pcrextend_header; + BUILD_BUG_ON(be32_to_cpu(cmd.header.in.length) > EXTEND_PCR_SIZE); + cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(pcr_idx); + memcpy(cmd.params.pcrextend_in.hash, hash, TPM_DIGEST_SIZE); + rc = transmit_cmd(chip, &cmd, cmd.header.in.length, + "attempting extend a PCR value"); + + module_put(chip->dev->driver->owner); + return rc; +} +EXPORT_SYMBOL_GPL(tpm_pcr_extend); + ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, char *buf) { cap_t cap; - u8 *data; + u8 digest[TPM_DIGEST_SIZE]; ssize_t rc; int i, j, num_pcrs; - __be32 index; char *str = buf; struct tpm_chip *chip = dev_get_drvdata(dev); - data = kzalloc(TPM_INTERNAL_RESULT_SIZE, GFP_KERNEL); - if (!data) - return -ENOMEM; - rc = tpm_getcap(dev, TPM_CAP_PROP_PCR, &cap, "attempting to determine the number of PCRS"); if (rc) @@ -690,20 +787,14 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, num_pcrs = be32_to_cpu(cap.num_pcrs); for (i = 0; i < num_pcrs; i++) { - memcpy(data, pcrread, sizeof(pcrread)); - index = cpu_to_be32(i); - memcpy(data + 10, &index, 4); - rc = transmit_cmd(chip, (struct tpm_cmd_t *)data, - TPM_INTERNAL_RESULT_SIZE, - "attempting to read a PCR"); + rc = __tpm_pcr_read(chip, i, digest); if (rc) break; str += sprintf(str, "PCR-%02d: ", i); for (j = 0; j < TPM_DIGEST_SIZE; j++) - str += sprintf(str, "%02X ", *(data + 10 + j)); + str += sprintf(str, "%02X ", digest[j]); str += sprintf(str, "\n"); } - kfree(data); return str - buf; } EXPORT_SYMBOL_GPL(tpm_show_pcrs); diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index d64f6b7e5b82..8e00b4ddd083 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -26,6 +26,7 @@ #include #include #include +#include enum tpm_timeout { TPM_TIMEOUT = 5, /* msecs */ @@ -234,11 +235,28 @@ typedef union { struct tpm_output_header out; } tpm_cmd_header; +#define TPM_DIGEST_SIZE 20 +struct tpm_pcrread_out { + u8 pcr_result[TPM_DIGEST_SIZE]; +}__attribute__((packed)); + +struct tpm_pcrread_in { + __be32 pcr_idx; +}__attribute__((packed)); + +struct tpm_pcrextend_in { + __be32 pcr_idx; + u8 hash[TPM_DIGEST_SIZE]; +}__attribute__((packed)); + typedef union { struct tpm_getcap_params_out getcap_out; struct tpm_readpubek_params_out readpubek_out; u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)]; struct tpm_getcap_params_in getcap_in; + struct tpm_pcrread_in pcrread_in; + struct tpm_pcrread_out pcrread_out; + struct tpm_pcrextend_in pcrextend_in; } tpm_cmd_params; struct tpm_cmd_t { diff --git a/include/linux/tpm.h b/include/linux/tpm.h new file mode 100644 index 000000000000..3338b3f5c21a --- /dev/null +++ b/include/linux/tpm.h @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2004,2007,2008 IBM Corporation + * + * Authors: + * Leendert van Doorn + * Dave Safford + * Reiner Sailer + * Kylene Hall + * Debora Velarde + * + * Maintained by: + * + * Device driver for TCG/TCPA TPM (trusted platform module). + * Specifications at www.trustedcomputinggroup.org + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, version 2 of the + * License. + * + */ +#ifndef __LINUX_TPM_H__ +#define __LINUX_TPM_H__ + +/* + * Chip num is this value or a valid tpm idx + */ +#define TPM_ANY_NUM 0xFFFF + +#if defined(CONFIG_TCG_TPM) + +extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); +extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); +#endif +#endif -- cgit v1.2.3 From 8920d5ad6ba74ae8ab020e90cc4d976980e68701 Mon Sep 17 00:00:00 2001 From: Rajiv Andrade Date: Thu, 5 Feb 2009 13:06:30 -0200 Subject: TPM: integrity fix Fix to function which is called by IMA, now tpm_chip_find_get() considers the case in which the machine doesn't have a TPM or, if it has, its TPM isn't enabled. Signed-off-by: Mimi Zohar Signed-off-by: Rajiv Andrade Acked-by: Serge Hallyn Signed-off-by: James Morris --- drivers/char/tpm/tpm.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 62a5682578ca..ccdd828adcef 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -666,18 +666,20 @@ EXPORT_SYMBOL_GPL(tpm_show_temp_deactivated); */ static struct tpm_chip *tpm_chip_find_get(int chip_num) { - struct tpm_chip *pos; + struct tpm_chip *pos, *chip = NULL; rcu_read_lock(); list_for_each_entry_rcu(pos, &tpm_chip_list, list) { if (chip_num != TPM_ANY_NUM && chip_num != pos->dev_num) continue; - if (try_module_get(pos->dev->driver->owner)) + if (try_module_get(pos->dev->driver->owner)) { + chip = pos; break; + } } rcu_read_unlock(); - return pos; + return chip; } #define TPM_ORDINAL_PCRREAD cpu_to_be32(21) -- cgit v1.2.3 From 9c3c133b1ed6e6d01bfabb6de29bf3d0f0886354 Mon Sep 17 00:00:00 2001 From: Alexander Clouter Date: Sun, 22 Feb 2009 12:03:56 +0800 Subject: hwrng: timeriomem - New driver Some hardware platforms, the TS-7800[1] is one for example, can supply the kernel with an entropy source, albeit a slow one for TS-7800 users, by just reading a particular IO address. This source must not be read above a certain rate otherwise the quality suffers. The driver is then hooked into by calling platform_device_(register|add|del) passing a structure similar to: ------ static struct timeriomem_rng_data ts78xx_ts_rng_data = { .address = (u32 *__iomem) TS_RNG, .period = 1000000, /* one second */ }; static struct platform_device ts78xx_ts_rng_device = { .name = "timeriomem_rng", .id = -1, .dev = { .platform_data = &ts78xx_ts_rng_data, }, .num_resources = 0, }; ------ [1] http://www.embeddedarm.com/products/board-detail.php?product=TS-7800 Signed-off-by: Alexander Clouter Signed-off-by: Herbert Xu --- drivers/char/hw_random/Kconfig | 14 +++ drivers/char/hw_random/Makefile | 1 + drivers/char/hw_random/timeriomem-rng.c | 151 ++++++++++++++++++++++++++++++++ include/linux/timeriomem-rng.h | 21 +++++ 4 files changed, 187 insertions(+) create mode 100644 drivers/char/hw_random/timeriomem-rng.c create mode 100644 include/linux/timeriomem-rng.h (limited to 'drivers/char') diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 8822eca58ffa..e86dd425a70f 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -20,6 +20,20 @@ config HW_RANDOM If unsure, say Y. +config HW_RANDOM_TIMERIOMEM + tristate "Timer IOMEM HW Random Number Generator support" + depends on HW_RANDOM + ---help--- + This driver provides kernel-side support for a generic Random + Number Generator used by reading a 'dumb' iomem address that + is to be read no faster than, for example, once a second; + the default FPGA bitstream on the TS-7800 has such functionality. + + To compile this driver as a module, choose M here: the + module will be called timeriomem-rng. + + If unsure, say Y. + config HW_RANDOM_INTEL tristate "Intel HW Random Number Generator support" depends on HW_RANDOM && (X86 || IA64) && PCI diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index b6effb7522c2..e81d21a5f28f 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_HW_RANDOM) += rng-core.o rng-core-y := core.o +obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c new file mode 100644 index 000000000000..10ad41be5897 --- /dev/null +++ b/drivers/char/hw_random/timeriomem-rng.c @@ -0,0 +1,151 @@ +/* + * drivers/char/hw_random/timeriomem-rng.c + * + * Copyright (C) 2009 Alexander Clouter + * + * Derived from drivers/char/hw_random/omap-rng.c + * Copyright 2005 (c) MontaVista Software, Inc. + * Author: Deepak Saxena + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Overview: + * This driver is useful for platforms that have an IO range that provides + * periodic random data from a single IO memory address. All the platform + * has to do is provide the address and 'wait time' that new data becomes + * available. + * + * TODO: add support for reading sizes other than 32bits and masking + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct timeriomem_rng_data *timeriomem_rng_data; + +static void timeriomem_rng_trigger(unsigned long); +static DEFINE_TIMER(timeriomem_rng_timer, timeriomem_rng_trigger, 0, 0); + +/* + * have data return 1, however return 0 if we have nothing + */ +static int timeriomem_rng_data_present(struct hwrng *rng, int wait) +{ + if (rng->priv == 0) + return 1; + + if (!wait || timeriomem_rng_data->present) + return timeriomem_rng_data->present; + + wait_for_completion(&timeriomem_rng_data->completion); + + return 1; +} + +static int timeriomem_rng_data_read(struct hwrng *rng, u32 *data) +{ + unsigned long cur; + s32 delay; + + *data = readl(timeriomem_rng_data->address); + + if (rng->priv != 0) { + cur = jiffies; + + delay = cur - timeriomem_rng_timer.expires; + delay = rng->priv - (delay % rng->priv); + + timeriomem_rng_timer.expires = cur + delay; + timeriomem_rng_data->present = 0; + + init_completion(&timeriomem_rng_data->completion); + add_timer(&timeriomem_rng_timer); + } + + return 4; +} + +static void timeriomem_rng_trigger(unsigned long dummy) +{ + timeriomem_rng_data->present = 1; + complete(&timeriomem_rng_data->completion); +} + +static struct hwrng timeriomem_rng_ops = { + .name = "timeriomem", + .data_present = timeriomem_rng_data_present, + .data_read = timeriomem_rng_data_read, + .priv = 0, +}; + +static int __init timeriomem_rng_probe(struct platform_device *pdev) +{ + int ret; + + timeriomem_rng_data = pdev->dev.platform_data; + + if (timeriomem_rng_data->period != 0 + && usecs_to_jiffies(timeriomem_rng_data->period) > 0) { + timeriomem_rng_timer.expires = jiffies; + + timeriomem_rng_ops.priv = usecs_to_jiffies( + timeriomem_rng_data->period); + } + timeriomem_rng_data->present = 1; + + ret = hwrng_register(&timeriomem_rng_ops); + if (ret) { + dev_err(&pdev->dev, "problem registering\n"); + return ret; + } + + dev_info(&pdev->dev, "32bits from 0x%p @ %dus\n", + timeriomem_rng_data->address, + timeriomem_rng_data->period); + + return 0; +} + +static int __devexit timeriomem_rng_remove(struct platform_device *pdev) +{ + del_timer_sync(&timeriomem_rng_timer); + hwrng_unregister(&timeriomem_rng_ops); + + return 0; +} + +static struct platform_driver timeriomem_rng_driver = { + .driver = { + .name = "timeriomem_rng", + .owner = THIS_MODULE, + }, + .probe = timeriomem_rng_probe, + .remove = __devexit_p(timeriomem_rng_remove), +}; + +static int __init timeriomem_rng_init(void) +{ + return platform_driver_register(&timeriomem_rng_driver); +} + +static void __exit timeriomem_rng_exit(void) +{ + platform_driver_unregister(&timeriomem_rng_driver); +} + +module_init(timeriomem_rng_init); +module_exit(timeriomem_rng_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Alexander Clouter "); +MODULE_DESCRIPTION("Timer IOMEM H/W RNG driver"); diff --git a/include/linux/timeriomem-rng.h b/include/linux/timeriomem-rng.h new file mode 100644 index 000000000000..dd253177f65f --- /dev/null +++ b/include/linux/timeriomem-rng.h @@ -0,0 +1,21 @@ +/* + * linux/include/linux/timeriomem-rng.h + * + * Copyright (c) 2009 Alexander Clouter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + +struct timeriomem_rng_data { + struct completion completion; + unsigned int present:1; + + u32 __iomem *address; + + /* measures in usecs */ + unsigned int period; +}; -- cgit v1.2.3 From 2f68891314b14e7e0ef07b4e77a8ea6e917fc74b Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 10 Mar 2009 12:55:50 -0700 Subject: x86/agp: tighten check to update amd nb aperture Impact: fix bug to make agp work with dri Jeffrey reported that dri does work with 64bit, but doesn't work with 32bit it turns out NB aperture is 32M, aperture on agp is 128M 64bit is using 64M for vaidation for 64 iommu/gart 32bit is only using 32M..., and will not update the nb aperture. So try to compare nb apterture and agp apterture before leaving not touch nb aperture. Reported-by: Jeffrey Trull Tested-by: Jeffrey Trull Signed-off-by: Yinghai Lu Acked-by: Dave Airlie Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/agp/amd64-agp.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 52f4361eb6e4..d765afda9c2a 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -271,15 +271,15 @@ static __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp, nb_order = (nb_order >> 1) & 7; pci_read_config_dword(nb, AMD64_GARTAPERTUREBASE, &nb_base); nb_aper = nb_base << 25; - if (agp_aperture_valid(nb_aper, (32*1024*1024)<= order) { + if (agp_aperture_valid(nb_aper, (32*1024*1024)<dev, "aperture from AGP @ %Lx size %u MB\n", aper, 32 << order); if (order < 0 || !agp_aperture_valid(aper, (32*1024*1024)< Date: Tue, 10 Mar 2009 12:55:54 -0700 Subject: intel-agp: fix a panic with 1M of shared memory, no GTT entries When GTT size is equal to amount of video memory, the amount of GTT entries is computed lower than zero, which is invalid and leads to off-by-one error in intel_i915_configure() Originally posted here: http://bugzilla.kernel.org/show_bug.cgi?id=12539 http://bugzilla.redhat.com/show_bug.cgi?id=445592 Signed-off-by: Lubomir Rintel Cc: Lubomir Rintel Cc: Dave Airlie Reviewed-by: Eric Anholt Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/agp/intel-agp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index c7714185f831..4373adb2119a 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -633,13 +633,15 @@ static void intel_i830_init_gtt_entries(void) break; } } - if (gtt_entries > 0) + if (gtt_entries > 0) { dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n", gtt_entries / KB(1), local ? "local" : "stolen"); - else + gtt_entries /= KB(4); + } else { dev_info(&agp_bridge->dev->dev, "no pre-allocated video memory detected\n"); - gtt_entries /= KB(4); + gtt_entries = 0; + } intel_private.gtt_entries = gtt_entries; } -- cgit v1.2.3 From 187cfc439f7b1a7c91ff72d561b2a7c9c0b83431 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 9 Mar 2009 14:36:15 +0000 Subject: hvc_console: Remove tty->low_latency on pseries backends The hvcs and hvsi backends both set tty->low_latency to one, along with more or less scary comments regarding bugs or races that would happen if not doing so. However, they also both call tty_flip_buffer_push() in conexts where it's illegal to do so since some recent tty changes (or at least it may have been illegal always but it nows blows) when low_latency is set (ie, hard interrupt or with spinlock held and irqs disabled). This removes the setting for now to get them back to working condition, we'll have to address the races described in the comments separately if they are still an issue (some of this might have been fixed already). Signed-off-by: Benjamin Herrenschmidt --- drivers/char/hvcs.c | 9 --------- drivers/char/hvsi.c | 1 - 2 files changed, 10 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c index 6e6eb445d374..c76bccf5354d 100644 --- a/drivers/char/hvcs.c +++ b/drivers/char/hvcs.c @@ -1139,15 +1139,6 @@ static int hvcs_open(struct tty_struct *tty, struct file *filp) hvcsd->tty = tty; tty->driver_data = hvcsd; - /* - * Set this driver to low latency so that we actually have a chance at - * catching a throttled TTY after we flip_buffer_push. Otherwise the - * flush_to_async may not execute until after the kernel_thread has - * yielded and resumed the next flip_buffer_push resulting in data - * loss. - */ - tty->low_latency = 1; - memset(&hvcsd->buffer[0], 0x00, HVCS_BUFF_LEN); /* diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c index 406f8742a260..2989056a9e39 100644 --- a/drivers/char/hvsi.c +++ b/drivers/char/hvsi.c @@ -810,7 +810,6 @@ static int hvsi_open(struct tty_struct *tty, struct file *filp) hp = &hvsi_ports[line]; tty->driver_data = hp; - tty->low_latency = 1; /* avoid throttle/tty_flip_buffer_push race */ mb(); if (hp->state == HVSI_FSP_DIED) -- cgit v1.2.3 From bfe4f4f800ccbb499a1120735016a20d3feacd4f Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Fri, 9 Jan 2009 18:57:06 -0600 Subject: parisc: remove klist iterators commit 11c3b5c3e08f4d855cbef52883c266b9ab9df879 Author: Greg Kroah-Hartman Date: Tue Dec 16 12:24:56 2008 -0800 driver core: move klist_children into private structure Broke our parisc build pretty badly because we touch the klists directly in three cases (AGP, SBA and GSC). Although GregKH will revert this patch, there's no reason we should be using the iterators directly, we can just move to the standard device_for_each_child() API. Signed-off-by: James Bottomley Tested-by: Helge Deller Tested-by: Kyle McMartin Signed-off-by: Kyle McMartin --- drivers/char/agp/parisc-agp.c | 23 ++++++++-------- drivers/parisc/gsc.c | 39 +++++++++++++++------------ drivers/parisc/sba_iommu.c | 61 +++++++++++++++++++++++++------------------ 3 files changed, 68 insertions(+), 55 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/agp/parisc-agp.c b/drivers/char/agp/parisc-agp.c index db60539bf67a..699e3422ad93 100644 --- a/drivers/char/agp/parisc-agp.c +++ b/drivers/char/agp/parisc-agp.c @@ -359,9 +359,16 @@ fail: return error; } -static struct device *next_device(struct klist_iter *i) { - struct klist_node * n = klist_next(i); - return n ? container_of(n, struct device, knode_parent) : NULL; +static int +find_quicksilver(struct device *dev, void *data) +{ + struct parisc_device **lba = data; + struct parisc_device *padev = to_parisc_device(dev); + + if (IS_QUICKSILVER(padev)) + *lba = padev; + + return 0; } static int @@ -372,8 +379,6 @@ parisc_agp_init(void) int err = -1; struct parisc_device *sba = NULL, *lba = NULL; struct lba_device *lbadev = NULL; - struct device *dev = NULL; - struct klist_iter i; if (!sba_list) goto out; @@ -386,13 +391,7 @@ parisc_agp_init(void) } /* Now search our Pluto for our precious AGP device... */ - klist_iter_init(&sba->dev.klist_children, &i); - while ((dev = next_device(&i))) { - struct parisc_device *padev = to_parisc_device(dev); - if (IS_QUICKSILVER(padev)) - lba = padev; - } - klist_iter_exit(&i); + device_for_each_child(&sba->dev, &lba, find_quicksilver); if (!lba) { printk(KERN_INFO DRVPFX "No AGP devices found.\n"); diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c index e76db9e4d504..d33632917696 100644 --- a/drivers/parisc/gsc.c +++ b/drivers/parisc/gsc.c @@ -186,29 +186,34 @@ void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp) *irqp = irq; } -static struct device *next_device(struct klist_iter *i) +struct gsc_fixup_struct { + void (*choose_irq)(struct parisc_device *, void *); + void *ctrl; +}; + +static int gsc_fixup_irqs_callback(struct device *dev, void *data) { - struct klist_node * n = klist_next(i); - return n ? container_of(n, struct device, knode_parent) : NULL; + struct parisc_device *padev = to_parisc_device(dev); + struct gsc_fixup_struct *gf = data; + + /* work-around for 715/64 and others which have parent + at path [5] and children at path [5/0/x] */ + if (padev->id.hw_type == HPHW_FAULTY) + gsc_fixup_irqs(padev, gf->ctrl, gf->choose_irq); + gf->choose_irq(padev, gf->ctrl); + + return 0; } void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl, void (*choose_irq)(struct parisc_device *, void *)) { - struct device *dev; - struct klist_iter i; - - klist_iter_init(&parent->dev.klist_children, &i); - while ((dev = next_device(&i))) { - struct parisc_device *padev = to_parisc_device(dev); - - /* work-around for 715/64 and others which have parent - at path [5] and children at path [5/0/x] */ - if (padev->id.hw_type == HPHW_FAULTY) - return gsc_fixup_irqs(padev, ctrl, choose_irq); - choose_irq(padev, ctrl); - } - klist_iter_exit(&i); + struct gsc_fixup_struct data = { + .choose_irq = choose_irq, + .ctrl = ctrl, + }; + + device_for_each_child(&parent->dev, &data, gsc_fixup_irqs_callback); } int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic) diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index a70cf16ee1ad..6aad8546fd24 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -1206,31 +1206,49 @@ sba_alloc_pdir(unsigned int pdir_size) return (void *) pdir_base; } -static struct device *next_device(struct klist_iter *i) +struct ibase_data_struct { + struct ioc *ioc; + int ioc_num; +}; + +static int setup_ibase_imask_callback(struct device *dev, void *data) { - struct klist_node * n = klist_next(i); - return n ? container_of(n, struct device, knode_parent) : NULL; + /* lba_set_iregs() is in drivers/parisc/lba_pci.c */ + extern void lba_set_iregs(struct parisc_device *, u32, u32); + struct parisc_device *lba = to_parisc_device(dev); + struct ibase_data_struct *ibd = data; + int rope_num = (lba->hpa.start >> 13) & 0xf; + if (rope_num >> 3 == ibd->ioc_num) + lba_set_iregs(lba, ibd->ioc->ibase, ibd->ioc->imask); + return 0; } /* setup Mercury or Elroy IBASE/IMASK registers. */ static void setup_ibase_imask(struct parisc_device *sba, struct ioc *ioc, int ioc_num) { - /* lba_set_iregs() is in drivers/parisc/lba_pci.c */ - extern void lba_set_iregs(struct parisc_device *, u32, u32); - struct device *dev; - struct klist_iter i; - - klist_iter_init(&sba->dev.klist_children, &i); - while ((dev = next_device(&i))) { - struct parisc_device *lba = to_parisc_device(dev); - int rope_num = (lba->hpa.start >> 13) & 0xf; - if (rope_num >> 3 == ioc_num) - lba_set_iregs(lba, ioc->ibase, ioc->imask); - } - klist_iter_exit(&i); + struct ibase_data_struct ibase_data = { + .ioc = ioc, + .ioc_num = ioc_num, + }; + + device_for_each_child(&sba->dev, &ibase_data, + setup_ibase_imask_callback); } +#ifdef SBA_AGP_SUPPORT +static int +sba_ioc_find_quicksilver(struct device *dev, void *data) +{ + int *agp_found = data; + struct parisc_device *lba = to_parisc_device(dev); + + if (IS_QUICKSILVER(lba)) + *agp_found = 1; + return 0; +} +#endif + static void sba_ioc_init_pluto(struct parisc_device *sba, struct ioc *ioc, int ioc_num) { @@ -1332,9 +1350,6 @@ sba_ioc_init_pluto(struct parisc_device *sba, struct ioc *ioc, int ioc_num) WRITE_REG(ioc->ibase | 31, ioc->ioc_hpa + IOC_PCOM); #ifdef SBA_AGP_SUPPORT -{ - struct klist_iter i; - struct device *dev = NULL; /* ** If an AGP device is present, only use half of the IOV space @@ -1344,13 +1359,7 @@ sba_ioc_init_pluto(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ** We program the next pdir index after we stop w/ a key for ** the GART code to handshake on. */ - klist_iter_init(&sba->dev.klist_children, &i); - while ((dev = next_device(&i))) { - struct parisc_device *lba = to_parisc_device(dev); - if (IS_QUICKSILVER(lba)) - agp_found = 1; - } - klist_iter_exit(&i); + device_for_each_child(&sba->dev, &agp_found, sba_ioc_find_quicksilver); if (agp_found && sba_reserve_agpgart) { printk(KERN_INFO "%s: reserving %dMb of IOVA space for agpgart\n", -- cgit v1.2.3 From e88cd6ff2ce14ed7025d253b7f7f468d38415f77 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Sat, 21 Mar 2009 14:19:04 +0800 Subject: hwrng: timeriomem - Breaks an allyesconfig build on s390: CC drivers/char/hw_random/timeriomem-rng.o drivers/char/hw_random/timeriomem-rng.c: In function 'timeriomem_rng_data_read': drivers/char/hw_random/timeriomem-rng.c:60: error: implicit declaration of function 'readl' Signed-off-by: Heiko Carstens Signed-off-by: Herbert Xu --- drivers/char/hw_random/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/char') diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index e86dd425a70f..5fab6470f4b2 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -22,7 +22,7 @@ config HW_RANDOM config HW_RANDOM_TIMERIOMEM tristate "Timer IOMEM HW Random Number Generator support" - depends on HW_RANDOM + depends on HW_RANDOM && HAS_IOMEM ---help--- This driver provides kernel-side support for a generic Random Number Generator used by reading a 'dumb' iomem address that -- cgit v1.2.3 From 7a192ec334cab9fafe3a8665a65af398b0e24730 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 6 Feb 2009 23:40:12 +0800 Subject: platform driver: fix incorrect use of 'platform_bus_type' with 'struct device_driver' This patch fixes the bug reported in http://bugzilla.kernel.org/show_bug.cgi?id=11681. "Lots of device drivers register a 'struct device_driver' with the '.bus' member set to '&platform_bus_type'. This is wrong, since the platform_bus functions expect the 'struct device_driver' to be wrapped up in a 'struct platform_driver' which provides some additional callbacks (like suspend_late, resume_early). The effect may be that platform_suspend_late() uses bogus data outside the device_driver struct as a pointer pointer to the device driver's suspend_late() function or other hard to reproduce failures."(Lothar Wassmann) Signed-off-by: Ming Lei Acked-by: Henrique de Moraes Holschuh Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- arch/mips/basler/excite/excite_iodev.c | 27 ++++++++++++------------ drivers/char/tpm/tpm_atmel.c | 28 +++++++++++++++++-------- drivers/char/tpm/tpm_tis.c | 28 +++++++++++++++++-------- drivers/ide/au1xxx-ide.c | 36 ++++++++++++++++---------------- drivers/mtd/maps/pxa2xx-flash.c | 37 +++++++++++++++++---------------- drivers/mtd/nand/excite_nandflash.c | 25 +++++++++++----------- drivers/mtd/onenand/generic.c | 26 +++++++++++------------ drivers/net/mipsnet.c | 26 ++++++++++++----------- drivers/pcmcia/au1000_generic.c | 37 +++++++++++++++++++++------------ drivers/pcmcia/i82365.c | 28 ++++++++++++++++++------- drivers/pcmcia/m32r_cfc.c | 30 +++++++++++++++++++-------- drivers/pcmcia/m32r_pcc.c | 30 +++++++++++++++++++-------- drivers/pcmcia/sa1100_generic.c | 38 +++++++++++++++++++++++++--------- drivers/pcmcia/tcic.c | 30 +++++++++++++++++++-------- drivers/pcmcia/vrc4171_card.c | 34 +++++++++++++++++++++--------- drivers/scsi/a4000t.c | 26 ++++++++++++----------- drivers/scsi/bvme6000_scsi.c | 26 ++++++++++++----------- drivers/scsi/mvme16x_scsi.c | 26 ++++++++++++----------- drivers/video/au1100fb.c | 31 +++++++++++++-------------- drivers/video/au1200fb.c | 25 ++++++++++++---------- drivers/watchdog/rm9k_wdt.c | 27 +++++++++++------------- 21 files changed, 371 insertions(+), 250 deletions(-) (limited to 'drivers/char') diff --git a/arch/mips/basler/excite/excite_iodev.c b/arch/mips/basler/excite/excite_iodev.c index a1e3526b4a94..dfbfd7e2ac08 100644 --- a/arch/mips/basler/excite/excite_iodev.c +++ b/arch/mips/basler/excite/excite_iodev.c @@ -33,8 +33,8 @@ static const struct resource *iodev_get_resource(struct platform_device *, const char *, unsigned int); -static int __init iodev_probe(struct device *); -static int __exit iodev_remove(struct device *); +static int __init iodev_probe(struct platform_device *); +static int __exit iodev_remove(struct platform_device *); static int iodev_open(struct inode *, struct file *); static int iodev_release(struct inode *, struct file *); static ssize_t iodev_read(struct file *, char __user *, size_t s, loff_t *); @@ -65,13 +65,13 @@ static struct miscdevice miscdev = .fops = &fops }; -static struct device_driver iodev_driver = -{ - .name = (char *) iodev_name, - .bus = &platform_bus_type, - .owner = THIS_MODULE, +static struct platform_driver iodev_driver = { + .driver = { + .name = iodev_name, + .owner = THIS_MODULE, + }, .probe = iodev_probe, - .remove = __exit_p(iodev_remove) + .remove = __devexit_p(iodev_remove), }; @@ -89,11 +89,10 @@ iodev_get_resource(struct platform_device *pdv, const char *name, /* No hotplugging on the platform bus - use __init */ -static int __init iodev_probe(struct device *dev) +static int __init iodev_probe(struct platform_device *dev) { - struct platform_device * const pdv = to_platform_device(dev); const struct resource * const ri = - iodev_get_resource(pdv, IODEV_RESOURCE_IRQ, IORESOURCE_IRQ); + iodev_get_resource(dev, IODEV_RESOURCE_IRQ, IORESOURCE_IRQ); if (unlikely(!ri)) return -ENXIO; @@ -104,7 +103,7 @@ static int __init iodev_probe(struct device *dev) -static int __exit iodev_remove(struct device *dev) +static int __exit iodev_remove(struct platform_device *dev) { return misc_deregister(&miscdev); } @@ -160,14 +159,14 @@ static irqreturn_t iodev_irqhdl(int irq, void *ctxt) static int __init iodev_init_module(void) { - return driver_register(&iodev_driver); + return platform_driver_register(&iodev_driver); } static void __exit iodev_cleanup_module(void) { - driver_unregister(&iodev_driver); + platform_driver_unregister(&iodev_driver); } module_init(iodev_init_module); diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c index d0e7926eb486..c64a1bc65349 100644 --- a/drivers/char/tpm/tpm_atmel.c +++ b/drivers/char/tpm/tpm_atmel.c @@ -168,12 +168,22 @@ static void atml_plat_remove(void) } } -static struct device_driver atml_drv = { - .name = "tpm_atmel", - .bus = &platform_bus_type, - .owner = THIS_MODULE, - .suspend = tpm_pm_suspend, - .resume = tpm_pm_resume, +static int tpm_atml_suspend(struct platform_device *dev, pm_message_t msg) +{ + return tpm_pm_suspend(&dev->dev, msg); +} + +static int tpm_atml_resume(struct platform_device *dev) +{ + return tpm_pm_resume(&dev->dev); +} +static struct platform_driver atml_drv = { + .driver = { + .name = "tpm_atmel", + .owner = THIS_MODULE, + }, + .suspend = tpm_atml_suspend, + .resume = tpm_atml_resume, }; static int __init init_atmel(void) @@ -184,7 +194,7 @@ static int __init init_atmel(void) unsigned long base; struct tpm_chip *chip; - rc = driver_register(&atml_drv); + rc = platform_driver_register(&atml_drv); if (rc) return rc; @@ -223,13 +233,13 @@ err_rel_reg: atmel_release_region(base, region_size); err_unreg_drv: - driver_unregister(&atml_drv); + platform_driver_unregister(&atml_drv); return rc; } static void __exit cleanup_atmel(void) { - driver_unregister(&atml_drv); + platform_driver_unregister(&atml_drv); atml_plat_remove(); } diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index 717af7ad1bdf..aec1931608aa 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -654,12 +654,22 @@ module_param_string(hid, tpm_pnp_tbl[TIS_HID_USR_IDX].id, sizeof(tpm_pnp_tbl[TIS_HID_USR_IDX].id), 0444); MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe"); -static struct device_driver tis_drv = { - .name = "tpm_tis", - .bus = &platform_bus_type, - .owner = THIS_MODULE, - .suspend = tpm_pm_suspend, - .resume = tpm_pm_resume, +static int tpm_tis_suspend(struct platform_device *dev, pm_message_t msg) +{ + return tpm_pm_suspend(&dev->dev, msg); +} + +static int tpm_tis_resume(struct platform_device *dev) +{ + return tpm_pm_resume(&dev->dev); +} +static struct platform_driver tis_drv = { + .driver = { + .name = "tpm_tis", + .owner = THIS_MODULE, + }, + .suspend = tpm_tis_suspend, + .resume = tpm_tis_resume, }; static struct platform_device *pdev; @@ -672,14 +682,14 @@ static int __init init_tis(void) int rc; if (force) { - rc = driver_register(&tis_drv); + rc = platform_driver_register(&tis_drv); if (rc < 0) return rc; if (IS_ERR(pdev=platform_device_register_simple("tpm_tis", -1, NULL, 0))) return PTR_ERR(pdev); if((rc=tpm_tis_init(&pdev->dev, TIS_MEM_BASE, TIS_MEM_LEN, 0)) != 0) { platform_device_unregister(pdev); - driver_unregister(&tis_drv); + platform_driver_unregister(&tis_drv); } return rc; } @@ -711,7 +721,7 @@ static void __exit cleanup_tis(void) if (force) { platform_device_unregister(pdev); - driver_unregister(&tis_drv); + platform_driver_unregister(&tis_drv); } else pnp_unregister_driver(&tis_pnp_driver); } diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c index 79a2dfed8eb7..154ec2cf734f 100644 --- a/drivers/ide/au1xxx-ide.c +++ b/drivers/ide/au1xxx-ide.c @@ -536,9 +536,8 @@ static const struct ide_port_info au1xxx_port_info = { #endif }; -static int au_ide_probe(struct device *dev) +static int au_ide_probe(struct platform_device *dev) { - struct platform_device *pdev = to_platform_device(dev); _auide_hwif *ahwif = &auide_hwif; struct resource *res; struct ide_host *host; @@ -552,23 +551,23 @@ static int au_ide_probe(struct device *dev) #endif memset(&auide_hwif, 0, sizeof(_auide_hwif)); - ahwif->irq = platform_get_irq(pdev, 0); + ahwif->irq = platform_get_irq(dev, 0); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res = platform_get_resource(dev, IORESOURCE_MEM, 0); if (res == NULL) { - pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); + pr_debug("%s %d: no base address\n", DRV_NAME, dev->id); ret = -ENODEV; goto out; } if (ahwif->irq < 0) { - pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); + pr_debug("%s %d: no IRQ\n", DRV_NAME, dev->id); ret = -ENODEV; goto out; } if (!request_mem_region(res->start, res->end - res->start + 1, - pdev->name)) { + dev->name)) { pr_debug("%s: request_mem_region failed\n", DRV_NAME); ret = -EBUSY; goto out; @@ -583,7 +582,7 @@ static int au_ide_probe(struct device *dev) memset(&hw, 0, sizeof(hw)); auide_setup_ports(&hw, ahwif); hw.irq = ahwif->irq; - hw.dev = dev; + hw.dev = &dev->dev; hw.chipset = ide_au1xxx; ret = ide_host_add(&au1xxx_port_info, hws, &host); @@ -592,7 +591,7 @@ static int au_ide_probe(struct device *dev) auide_hwif.hwif = host->ports[0]; - dev_set_drvdata(dev, host); + platform_set_drvdata(dev, host); printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); @@ -600,38 +599,39 @@ static int au_ide_probe(struct device *dev) return ret; } -static int au_ide_remove(struct device *dev) +static int au_ide_remove(struct platform_device *dev) { - struct platform_device *pdev = to_platform_device(dev); struct resource *res; - struct ide_host *host = dev_get_drvdata(dev); + struct ide_host *host = platform_get_drvdata(dev); _auide_hwif *ahwif = &auide_hwif; ide_host_remove(host); iounmap((void *)ahwif->regbase); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res = platform_get_resource(dev, IORESOURCE_MEM, 0); release_mem_region(res->start, res->end - res->start + 1); return 0; } -static struct device_driver au1200_ide_driver = { - .name = "au1200-ide", - .bus = &platform_bus_type, +static struct platform_driver au1200_ide_driver = { + .driver = { + .name = "au1200-ide", + .owner = THIS_MODULE, + }, .probe = au_ide_probe, .remove = au_ide_remove, }; static int __init au_ide_init(void) { - return driver_register(&au1200_ide_driver); + return platform_driver_register(&au1200_ide_driver); } static void __exit au_ide_exit(void) { - driver_unregister(&au1200_ide_driver); + platform_driver_unregister(&au1200_ide_driver); } MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c index 771139c5bf87..e9026cb1c5b2 100644 --- a/drivers/mtd/maps/pxa2xx-flash.c +++ b/drivers/mtd/maps/pxa2xx-flash.c @@ -41,9 +41,8 @@ struct pxa2xx_flash_info { static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; -static int __init pxa2xx_flash_probe(struct device *dev) +static int __init pxa2xx_flash_probe(struct platform_device *pdev) { - struct platform_device *pdev = to_platform_device(dev); struct flash_platform_data *flash = pdev->dev.platform_data; struct pxa2xx_flash_info *info; struct mtd_partition *parts; @@ -114,15 +113,15 @@ static int __init pxa2xx_flash_probe(struct device *dev) add_mtd_device(info->mtd); } - dev_set_drvdata(dev, info); + platform_set_drvdata(pdev, info); return 0; } -static int __exit pxa2xx_flash_remove(struct device *dev) +static int __exit pxa2xx_flash_remove(struct platform_device *dev) { - struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + struct pxa2xx_flash_info *info = platform_get_drvdata(dev); - dev_set_drvdata(dev, NULL); + platform_set_drvdata(dev, NULL); #ifdef CONFIG_MTD_PARTITIONS if (info->nr_parts) @@ -141,9 +140,9 @@ static int __exit pxa2xx_flash_remove(struct device *dev) } #ifdef CONFIG_PM -static int pxa2xx_flash_suspend(struct device *dev, pm_message_t state) +static int pxa2xx_flash_suspend(struct platform_device *dev, pm_message_t state) { - struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + struct pxa2xx_flash_info *info = platform_get_drvdata(dev); int ret = 0; if (info->mtd && info->mtd->suspend) @@ -151,17 +150,17 @@ static int pxa2xx_flash_suspend(struct device *dev, pm_message_t state) return ret; } -static int pxa2xx_flash_resume(struct device *dev) +static int pxa2xx_flash_resume(struct platform_device *dev) { - struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + struct pxa2xx_flash_info *info = platform_get_drvdata(dev); if (info->mtd && info->mtd->resume) info->mtd->resume(info->mtd); return 0; } -static void pxa2xx_flash_shutdown(struct device *dev) +static void pxa2xx_flash_shutdown(struct platform_device *dev) { - struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + struct pxa2xx_flash_info *info = platform_get_drvdata(dev); if (info && info->mtd->suspend(info->mtd) == 0) info->mtd->resume(info->mtd); @@ -172,11 +171,13 @@ static void pxa2xx_flash_shutdown(struct device *dev) #define pxa2xx_flash_shutdown NULL #endif -static struct device_driver pxa2xx_flash_driver = { - .name = "pxa2xx-flash", - .bus = &platform_bus_type, +static struct platform_driver pxa2xx_flash_driver = { + .driver = { + .name = "pxa2xx-flash", + .owner = THIS_MODULE, + }, .probe = pxa2xx_flash_probe, - .remove = __exit_p(pxa2xx_flash_remove), + .remove = __devexit_p(pxa2xx_flash_remove), .suspend = pxa2xx_flash_suspend, .resume = pxa2xx_flash_resume, .shutdown = pxa2xx_flash_shutdown, @@ -184,12 +185,12 @@ static struct device_driver pxa2xx_flash_driver = { static int __init init_pxa2xx_flash(void) { - return driver_register(&pxa2xx_flash_driver); + return platform_driver_register(&pxa2xx_flash_driver); } static void __exit cleanup_pxa2xx_flash(void) { - driver_unregister(&pxa2xx_flash_driver); + platform_driver_unregister(&pxa2xx_flash_driver); } module_init(init_pxa2xx_flash); diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c index ced14b5294d5..72446fb48d4b 100644 --- a/drivers/mtd/nand/excite_nandflash.c +++ b/drivers/mtd/nand/excite_nandflash.c @@ -128,11 +128,11 @@ static int excite_nand_devready(struct mtd_info *mtd) * The binding to the mtd and all allocated * resources are released. */ -static int __exit excite_nand_remove(struct device *dev) +static int __exit excite_nand_remove(struct platform_device *dev) { - struct excite_nand_drvdata * const this = dev_get_drvdata(dev); + struct excite_nand_drvdata * const this = platform_get_drvdata(dev); - dev_set_drvdata(dev, NULL); + platform_set_drvdata(dev, NULL); if (unlikely(!this)) { printk(KERN_ERR "%s: called %s without private data!!", @@ -159,9 +159,8 @@ static int __exit excite_nand_remove(struct device *dev) * it can allocate all necessary resources then calls the * nand layer to look for devices. */ -static int __init excite_nand_probe(struct device *dev) +static int __init excite_nand_probe(struct platform_device *pdev) { - struct platform_device * const pdev = to_platform_device(dev); struct excite_nand_drvdata *drvdata; /* private driver data */ struct nand_chip *board_chip; /* private flash chip data */ struct mtd_info *board_mtd; /* mtd info for this board */ @@ -175,7 +174,7 @@ static int __init excite_nand_probe(struct device *dev) } /* bind private data into driver */ - dev_set_drvdata(dev, drvdata); + platform_set_drvdata(pdev, drvdata); /* allocate and map the resource */ drvdata->regs = @@ -219,23 +218,25 @@ static int __init excite_nand_probe(struct device *dev) return 0; } -static struct device_driver excite_nand_driver = { - .name = "excite_nand", - .bus = &platform_bus_type, +static struct platform_driver excite_nand_driver = { + .driver = { + .name = "excite_nand", + .owner = THIS_MODULE, + }, .probe = excite_nand_probe, - .remove = __exit_p(excite_nand_remove) + .remove = __devexit_p(excite_nand_remove) }; static int __init excite_nand_init(void) { pr_info("Basler eXcite nand flash driver Version " EXCITE_NANDFLASH_VERSION "\n"); - return driver_register(&excite_nand_driver); + return platform_driver_register(&excite_nand_driver); } static void __exit excite_nand_exit(void) { - driver_unregister(&excite_nand_driver); + platform_driver_unregister(&excite_nand_driver); } module_init(excite_nand_init); diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c index 5b69e7773c6c..3a496c33fb52 100644 --- a/drivers/mtd/onenand/generic.c +++ b/drivers/mtd/onenand/generic.c @@ -36,10 +36,9 @@ struct onenand_info { struct onenand_chip onenand; }; -static int __devinit generic_onenand_probe(struct device *dev) +static int __devinit generic_onenand_probe(struct platform_device *pdev) { struct onenand_info *info; - struct platform_device *pdev = to_platform_device(dev); struct flash_platform_data *pdata = pdev->dev.platform_data; struct resource *res = pdev->resource; unsigned long size = res->end - res->start + 1; @@ -49,7 +48,7 @@ static int __devinit generic_onenand_probe(struct device *dev) if (!info) return -ENOMEM; - if (!request_mem_region(res->start, size, dev->driver->name)) { + if (!request_mem_region(res->start, size, pdev->dev.driver->name)) { err = -EBUSY; goto out_free_info; } @@ -82,7 +81,7 @@ static int __devinit generic_onenand_probe(struct device *dev) #endif err = add_mtd_device(&info->mtd); - dev_set_drvdata(&pdev->dev, info); + platform_set_drvdata(pdev, info); return 0; @@ -96,14 +95,13 @@ out_free_info: return err; } -static int __devexit generic_onenand_remove(struct device *dev) +static int __devexit generic_onenand_remove(struct platform_device *pdev) { - struct platform_device *pdev = to_platform_device(dev); - struct onenand_info *info = dev_get_drvdata(&pdev->dev); + struct onenand_info *info = platform_get_drvdata(pdev); struct resource *res = pdev->resource; unsigned long size = res->end - res->start + 1; - dev_set_drvdata(&pdev->dev, NULL); + platform_set_drvdata(pdev, NULL); if (info) { if (info->parts) @@ -120,9 +118,11 @@ static int __devexit generic_onenand_remove(struct device *dev) return 0; } -static struct device_driver generic_onenand_driver = { - .name = DRIVER_NAME, - .bus = &platform_bus_type, +static struct platform_driver generic_onenand_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, .probe = generic_onenand_probe, .remove = __devexit_p(generic_onenand_remove), }; @@ -131,12 +131,12 @@ MODULE_ALIAS(DRIVER_NAME); static int __init generic_onenand_init(void) { - return driver_register(&generic_onenand_driver); + return platform_driver_register(&generic_onenand_driver); } static void __exit generic_onenand_exit(void) { - driver_unregister(&generic_onenand_driver); + platform_driver_unregister(&generic_onenand_driver); } module_init(generic_onenand_init); diff --git a/drivers/net/mipsnet.c b/drivers/net/mipsnet.c index 4e7a5faf0351..664835b822fb 100644 --- a/drivers/net/mipsnet.c +++ b/drivers/net/mipsnet.c @@ -237,7 +237,7 @@ static void mipsnet_set_mclist(struct net_device *dev) { } -static int __init mipsnet_probe(struct device *dev) +static int __init mipsnet_probe(struct platform_device *dev) { struct net_device *netdev; int err; @@ -248,7 +248,7 @@ static int __init mipsnet_probe(struct device *dev) goto out; } - dev_set_drvdata(dev, netdev); + platform_set_drvdata(dev, netdev); netdev->open = mipsnet_open; netdev->stop = mipsnet_close; @@ -293,23 +293,25 @@ out: return err; } -static int __devexit mipsnet_device_remove(struct device *device) +static int __devexit mipsnet_device_remove(struct platform_device *device) { - struct net_device *dev = dev_get_drvdata(device); + struct net_device *dev = platform_get_drvdata(device); unregister_netdev(dev); release_region(dev->base_addr, sizeof(struct mipsnet_regs)); free_netdev(dev); - dev_set_drvdata(device, NULL); + platform_set_drvdata(device, NULL); return 0; } -static struct device_driver mipsnet_driver = { - .name = mipsnet_string, - .bus = &platform_bus_type, - .probe = mipsnet_probe, - .remove = __devexit_p(mipsnet_device_remove), +static struct platform_driver mipsnet_driver = { + .driver = { + .name = mipsnet_string, + .owner = THIS_MODULE, + }, + .probe = mipsnet_probe, + .remove = __devexit_p(mipsnet_device_remove), }; static int __init mipsnet_init_module(void) @@ -319,7 +321,7 @@ static int __init mipsnet_init_module(void) printk(KERN_INFO "MIPSNet Ethernet driver. Version: %s. " "(c)2005 MIPS Technologies, Inc.\n", MIPSNET_VERSION); - err = driver_register(&mipsnet_driver); + err = platform_driver_register(&mipsnet_driver); if (err) printk(KERN_ERR "Driver registration failed\n"); @@ -328,7 +330,7 @@ static int __init mipsnet_init_module(void) static void __exit mipsnet_exit_module(void) { - driver_unregister(&mipsnet_driver); + platform_driver_unregister(&mipsnet_driver); } module_init(mipsnet_init_module); diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c index fc1de46fd20a..90013341cd5f 100644 --- a/drivers/pcmcia/au1000_generic.c +++ b/drivers/pcmcia/au1000_generic.c @@ -468,13 +468,13 @@ out: return ret; } -int au1x00_drv_pcmcia_remove(struct device *dev) +int au1x00_drv_pcmcia_remove(struct platform_device *dev) { - struct skt_dev_info *sinfo = dev_get_drvdata(dev); + struct skt_dev_info *sinfo = platform_get_drvdata(dev); int i; mutex_lock(&pcmcia_sockets_lock); - dev_set_drvdata(dev, NULL); + platform_set_drvdata(dev, NULL); for (i = 0; i < sinfo->nskt; i++) { struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i); @@ -498,13 +498,13 @@ int au1x00_drv_pcmcia_remove(struct device *dev) * PCMCIA "Driver" API */ -static int au1x00_drv_pcmcia_probe(struct device *dev) +static int au1x00_drv_pcmcia_probe(struct platform_device *dev) { int i, ret = -ENODEV; mutex_lock(&pcmcia_sockets_lock); for (i=0; i < ARRAY_SIZE(au1x00_pcmcia_hw_init); i++) { - ret = au1x00_pcmcia_hw_init[i](dev); + ret = au1x00_pcmcia_hw_init[i](&dev->dev); if (ret == 0) break; } @@ -512,14 +512,26 @@ static int au1x00_drv_pcmcia_probe(struct device *dev) return ret; } +static int au1x00_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int au1x00_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} -static struct device_driver au1x00_pcmcia_driver = { +static struct platform_driver au1x00_pcmcia_driver = { + .driver = { + .name = "au1x00-pcmcia", + .owner = THIS_MODULE, + }, .probe = au1x00_drv_pcmcia_probe, .remove = au1x00_drv_pcmcia_remove, - .name = "au1x00-pcmcia", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, + .suspend = au1x00_drv_pcmcia_suspend, + .resume = au1x00_drv_pcmcia_resume, }; @@ -533,8 +545,7 @@ static struct device_driver au1x00_pcmcia_driver = { static int __init au1x00_pcmcia_init(void) { int error = 0; - if ((error = driver_register(&au1x00_pcmcia_driver))) - return error; + error = platform_driver_register(&au1x00_pcmcia_driver); return error; } @@ -544,7 +555,7 @@ static int __init au1x00_pcmcia_init(void) */ static void __exit au1x00_pcmcia_exit(void) { - driver_unregister(&au1x00_pcmcia_driver); + platform_driver_unregister(&au1x00_pcmcia_driver); } module_init(au1x00_pcmcia_init); diff --git a/drivers/pcmcia/i82365.c b/drivers/pcmcia/i82365.c index 71653ab84890..40d4953e4b12 100644 --- a/drivers/pcmcia/i82365.c +++ b/drivers/pcmcia/i82365.c @@ -1238,6 +1238,16 @@ static int pcic_init(struct pcmcia_socket *s) return 0; } +static int i82365_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int i82365_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} static struct pccard_operations pcic_operations = { .init = pcic_init, .get_status = pcic_get_status, @@ -1248,11 +1258,13 @@ static struct pccard_operations pcic_operations = { /*====================================================================*/ -static struct device_driver i82365_driver = { - .name = "i82365", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, +static struct platform_driver i82365_driver = { + .driver = { + .name = "i82365", + .owner = THIS_MODULE, + }, + .suspend = i82365_drv_pcmcia_suspend, + .resume = i82365_drv_pcmcia_resume, }; static struct platform_device *i82365_device; @@ -1261,7 +1273,7 @@ static int __init init_i82365(void) { int i, ret; - ret = driver_register(&i82365_driver); + ret = platform_driver_register(&i82365_driver); if (ret) goto err_out; @@ -1337,7 +1349,7 @@ err_dev_unregister: pnp_disable_dev(i82365_pnpdev); #endif err_driver_unregister: - driver_unregister(&i82365_driver); + platform_driver_unregister(&i82365_driver); err_out: return ret; } /* init_i82365 */ @@ -1365,7 +1377,7 @@ static void __exit exit_i82365(void) if (i82365_pnpdev) pnp_disable_dev(i82365_pnpdev); #endif - driver_unregister(&i82365_driver); + platform_driver_unregister(&i82365_driver); } /* exit_i82365 */ module_init(init_i82365); diff --git a/drivers/pcmcia/m32r_cfc.c b/drivers/pcmcia/m32r_cfc.c index 2ab4f22c21de..62b4ecc97c46 100644 --- a/drivers/pcmcia/m32r_cfc.c +++ b/drivers/pcmcia/m32r_cfc.c @@ -696,13 +696,25 @@ static struct pccard_operations pcc_operations = { .set_mem_map = pcc_set_mem_map, }; +static int cfc_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int cfc_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} /*====================================================================*/ -static struct device_driver pcc_driver = { - .name = "cfc", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, +static struct platform_driver pcc_driver = { + .driver = { + .name = "cfc", + .owner = THIS_MODULE, + }, + .suspend = cfc_drv_pcmcia_suspend, + .resume = cfc_drv_pcmcia_resume, }; static struct platform_device pcc_device = { @@ -716,13 +728,13 @@ static int __init init_m32r_pcc(void) { int i, ret; - ret = driver_register(&pcc_driver); + ret = platform_driver_register(&pcc_driver); if (ret) return ret; ret = platform_device_register(&pcc_device); if (ret){ - driver_unregister(&pcc_driver); + platform_driver_unregister(&pcc_driver); return ret; } @@ -754,7 +766,7 @@ static int __init init_m32r_pcc(void) if (pcc_sockets == 0) { printk("socket is not found.\n"); platform_device_unregister(&pcc_device); - driver_unregister(&pcc_driver); + platform_driver_unregister(&pcc_driver); return -ENODEV; } @@ -802,7 +814,7 @@ static void __exit exit_m32r_pcc(void) if (poll_interval != 0) del_timer_sync(&poll_timer); - driver_unregister(&pcc_driver); + platform_driver_unregister(&pcc_driver); } /* exit_m32r_pcc */ module_init(init_m32r_pcc); diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c index 2f108c23dbd9..12034b41d196 100644 --- a/drivers/pcmcia/m32r_pcc.c +++ b/drivers/pcmcia/m32r_pcc.c @@ -672,13 +672,25 @@ static struct pccard_operations pcc_operations = { .set_mem_map = pcc_set_mem_map, }; +static int pcc_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int pcc_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} /*====================================================================*/ -static struct device_driver pcc_driver = { - .name = "pcc", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, +static struct platform_driver pcc_driver = { + .driver = { + .name = "pcc", + .owner = THIS_MODULE, + }, + .suspend = pcc_drv_pcmcia_suspend, + .resume = pcc_drv_pcmcia_resume, }; static struct platform_device pcc_device = { @@ -692,13 +704,13 @@ static int __init init_m32r_pcc(void) { int i, ret; - ret = driver_register(&pcc_driver); + ret = platform_driver_register(&pcc_driver); if (ret) return ret; ret = platform_device_register(&pcc_device); if (ret){ - driver_unregister(&pcc_driver); + platform_driver_unregister(&pcc_driver); return ret; } @@ -715,7 +727,7 @@ static int __init init_m32r_pcc(void) if (pcc_sockets == 0) { printk("socket is not found.\n"); platform_device_unregister(&pcc_device); - driver_unregister(&pcc_driver); + platform_driver_unregister(&pcc_driver); return -ENODEV; } @@ -763,7 +775,7 @@ static void __exit exit_m32r_pcc(void) if (poll_interval != 0) del_timer_sync(&poll_timer); - driver_unregister(&pcc_driver); + platform_driver_unregister(&pcc_driver); } /* exit_m32r_pcc */ module_init(init_m32r_pcc); diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c index c5b2a44b4c37..d8da5ac844e9 100644 --- a/drivers/pcmcia/sa1100_generic.c +++ b/drivers/pcmcia/sa1100_generic.c @@ -65,7 +65,7 @@ static int (*sa11x0_pcmcia_hw_init[])(struct device *dev) = { #endif }; -static int sa11x0_drv_pcmcia_probe(struct device *dev) +static int sa11x0_drv_pcmcia_probe(struct platform_device *dev) { int i, ret = -ENODEV; @@ -73,7 +73,7 @@ static int sa11x0_drv_pcmcia_probe(struct device *dev) * Initialise any "on-board" PCMCIA sockets. */ for (i = 0; i < ARRAY_SIZE(sa11x0_pcmcia_hw_init); i++) { - ret = sa11x0_pcmcia_hw_init[i](dev); + ret = sa11x0_pcmcia_hw_init[i](&dev->dev); if (ret == 0) break; } @@ -81,13 +81,31 @@ static int sa11x0_drv_pcmcia_probe(struct device *dev) return ret; } -static struct device_driver sa11x0_pcmcia_driver = { +static int sa11x0_drv_pcmcia_remove(struct platform_device *dev) +{ + return soc_common_drv_pcmcia_remove(&dev->dev); +} + +static int sa11x0_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int sa11x0_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} + +static struct platform_driver sa11x0_pcmcia_driver = { + .driver = { + .name = "sa11x0-pcmcia", + .owner = THIS_MODULE, + }, .probe = sa11x0_drv_pcmcia_probe, - .remove = soc_common_drv_pcmcia_remove, - .name = "sa11x0-pcmcia", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, + .remove = sa11x0_drv_pcmcia_remove, + .suspend = sa11x0_drv_pcmcia_suspend, + .resume = sa11x0_drv_pcmcia_resume, }; /* sa11x0_pcmcia_init() @@ -100,7 +118,7 @@ static struct device_driver sa11x0_pcmcia_driver = { */ static int __init sa11x0_pcmcia_init(void) { - return driver_register(&sa11x0_pcmcia_driver); + return platform_driver_register(&sa11x0_pcmcia_driver); } /* sa11x0_pcmcia_exit() @@ -110,7 +128,7 @@ static int __init sa11x0_pcmcia_init(void) */ static void __exit sa11x0_pcmcia_exit(void) { - driver_unregister(&sa11x0_pcmcia_driver); + platform_driver_unregister(&sa11x0_pcmcia_driver); } MODULE_AUTHOR("John Dorsey "); diff --git a/drivers/pcmcia/tcic.c b/drivers/pcmcia/tcic.c index 2a613e920fd4..9ad97ea836e8 100644 --- a/drivers/pcmcia/tcic.c +++ b/drivers/pcmcia/tcic.c @@ -363,13 +363,25 @@ static int __init get_tcic_id(void) return id; } +static int tcic_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int tcic_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} /*====================================================================*/ -static struct device_driver tcic_driver = { - .name = "tcic-pcmcia", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, +static struct platform_driver tcic_driver = { + .driver = { + .name = "tcic-pcmcia", + .owner = THIS_MODULE, + }, + .suspend = tcic_drv_pcmcia_suspend, + .resume = tcic_drv_pcmcia_resume, }; static struct platform_device tcic_device = { @@ -383,7 +395,7 @@ static int __init init_tcic(void) int i, sock, ret = 0; u_int mask, scan; - if (driver_register(&tcic_driver)) + if (platform_driver_register(&tcic_driver)) return -1; printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: "); @@ -391,7 +403,7 @@ static int __init init_tcic(void) if (!request_region(tcic_base, 16, "tcic-2")) { printk("could not allocate ports,\n "); - driver_unregister(&tcic_driver); + platform_driver_unregister(&tcic_driver); return -ENODEV; } else { @@ -414,7 +426,7 @@ static int __init init_tcic(void) if (sock == 0) { printk("not found.\n"); release_region(tcic_base, 16); - driver_unregister(&tcic_driver); + platform_driver_unregister(&tcic_driver); return -ENODEV; } @@ -542,7 +554,7 @@ static void __exit exit_tcic(void) } platform_device_unregister(&tcic_device); - driver_unregister(&tcic_driver); + platform_driver_unregister(&tcic_driver); } /* exit_tcic */ /*====================================================================*/ diff --git a/drivers/pcmcia/vrc4171_card.c b/drivers/pcmcia/vrc4171_card.c index b2c412419059..659421d0ca46 100644 --- a/drivers/pcmcia/vrc4171_card.c +++ b/drivers/pcmcia/vrc4171_card.c @@ -704,24 +704,37 @@ static int __devinit vrc4171_card_setup(char *options) __setup("vrc4171_card=", vrc4171_card_setup); -static struct device_driver vrc4171_card_driver = { - .name = vrc4171_card_name, - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, +static int vrc4171_card_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int vrc4171_card_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} + +static struct platform_driver vrc4171_card_driver = { + .driver = { + .name = vrc4171_card_name, + .owner = THIS_MODULE, + }, + .suspend = vrc4171_card_suspend, + .resume = vrc4171_card_resume, }; static int __devinit vrc4171_card_init(void) { int retval; - retval = driver_register(&vrc4171_card_driver); + retval = platform_driver_register(&vrc4171_card_driver); if (retval < 0) return retval; retval = platform_device_register(&vrc4171_card_device); if (retval < 0) { - driver_unregister(&vrc4171_card_driver); + platform_driver_unregister(&vrc4171_card_driver); return retval; } @@ -735,11 +748,12 @@ static int __devinit vrc4171_card_init(void) if (retval < 0) { vrc4171_remove_sockets(); platform_device_unregister(&vrc4171_card_device); - driver_unregister(&vrc4171_card_driver); + platform_driver_unregister(&vrc4171_card_driver); return retval; } - printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq); + printk(KERN_INFO "%s, connected to IRQ %d\n", + vrc4171_card_driver.driver.name, vrc4171_irq); return 0; } @@ -749,7 +763,7 @@ static void __devexit vrc4171_card_exit(void) free_irq(vrc4171_irq, vrc4171_sockets); vrc4171_remove_sockets(); platform_device_unregister(&vrc4171_card_device); - driver_unregister(&vrc4171_card_driver); + platform_driver_unregister(&vrc4171_card_driver); } module_init(vrc4171_card_init); diff --git a/drivers/scsi/a4000t.c b/drivers/scsi/a4000t.c index d4bda2017746..6d25aca7b412 100644 --- a/drivers/scsi/a4000t.c +++ b/drivers/scsi/a4000t.c @@ -35,7 +35,7 @@ static struct platform_device *a4000t_scsi_device; #define A4000T_SCSI_ADDR 0xdd0040 -static int __devinit a4000t_probe(struct device *dev) +static int __devinit a4000t_probe(struct platform_device *dev) { struct Scsi_Host *host; struct NCR_700_Host_Parameters *hostdata; @@ -78,7 +78,7 @@ static int __devinit a4000t_probe(struct device *dev) goto out_put_host; } - dev_set_drvdata(dev, host); + platform_set_drvdata(dev, host); scsi_scan_host(host); return 0; @@ -93,9 +93,9 @@ static int __devinit a4000t_probe(struct device *dev) return -ENODEV; } -static __devexit int a4000t_device_remove(struct device *dev) +static __devexit int a4000t_device_remove(struct platform_device *dev) { - struct Scsi_Host *host = dev_get_drvdata(dev); + struct Scsi_Host *host = platform_get_drvdata(dev); struct NCR_700_Host_Parameters *hostdata = shost_priv(host); scsi_remove_host(host); @@ -108,25 +108,27 @@ static __devexit int a4000t_device_remove(struct device *dev) return 0; } -static struct device_driver a4000t_scsi_driver = { - .name = "a4000t-scsi", - .bus = &platform_bus_type, - .probe = a4000t_probe, - .remove = __devexit_p(a4000t_device_remove), +static struct platform_driver a4000t_scsi_driver = { + .driver = { + .name = "a4000t-scsi", + .owner = THIS_MODULE, + }, + .probe = a4000t_probe, + .remove = __devexit_p(a4000t_device_remove), }; static int __init a4000t_scsi_init(void) { int err; - err = driver_register(&a4000t_scsi_driver); + err = platform_driver_register(&a4000t_scsi_driver); if (err) return err; a4000t_scsi_device = platform_device_register_simple("a4000t-scsi", -1, NULL, 0); if (IS_ERR(a4000t_scsi_device)) { - driver_unregister(&a4000t_scsi_driver); + platform_driver_register(&a4000t_scsi_driver); return PTR_ERR(a4000t_scsi_device); } @@ -136,7 +138,7 @@ static int __init a4000t_scsi_init(void) static void __exit a4000t_scsi_exit(void) { platform_device_unregister(a4000t_scsi_device); - driver_unregister(&a4000t_scsi_driver); + platform_driver_unregister(&a4000t_scsi_driver); } module_init(a4000t_scsi_init); diff --git a/drivers/scsi/bvme6000_scsi.c b/drivers/scsi/bvme6000_scsi.c index d858f3d41274..9e9a82b03f2d 100644 --- a/drivers/scsi/bvme6000_scsi.c +++ b/drivers/scsi/bvme6000_scsi.c @@ -34,7 +34,7 @@ static struct scsi_host_template bvme6000_scsi_driver_template = { static struct platform_device *bvme6000_scsi_device; static __devinit int -bvme6000_probe(struct device *dev) +bvme6000_probe(struct platform_device *dev) { struct Scsi_Host *host; struct NCR_700_Host_Parameters *hostdata; @@ -73,7 +73,7 @@ bvme6000_probe(struct device *dev) goto out_put_host; } - dev_set_drvdata(dev, host); + platform_set_drvdata(dev, host); scsi_scan_host(host); return 0; @@ -87,9 +87,9 @@ bvme6000_probe(struct device *dev) } static __devexit int -bvme6000_device_remove(struct device *dev) +bvme6000_device_remove(struct platform_device *dev) { - struct Scsi_Host *host = dev_get_drvdata(dev); + struct Scsi_Host *host = platform_get_drvdata(dev); struct NCR_700_Host_Parameters *hostdata = shost_priv(host); scsi_remove_host(host); @@ -100,25 +100,27 @@ bvme6000_device_remove(struct device *dev) return 0; } -static struct device_driver bvme6000_scsi_driver = { - .name = "bvme6000-scsi", - .bus = &platform_bus_type, - .probe = bvme6000_probe, - .remove = __devexit_p(bvme6000_device_remove), +static struct platform_driver bvme6000_scsi_driver = { + .driver = { + .name = "bvme6000-scsi", + .owner = THIS_MODULE, + }, + .probe = bvme6000_probe, + .remove = __devexit_p(bvme6000_device_remove), }; static int __init bvme6000_scsi_init(void) { int err; - err = driver_register(&bvme6000_scsi_driver); + err = platform_driver_register(&bvme6000_scsi_driver); if (err) return err; bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi", -1, NULL, 0); if (IS_ERR(bvme6000_scsi_device)) { - driver_unregister(&bvme6000_scsi_driver); + platform_driver_unregister(&bvme6000_scsi_driver); return PTR_ERR(bvme6000_scsi_device); } @@ -128,7 +130,7 @@ static int __init bvme6000_scsi_init(void) static void __exit bvme6000_scsi_exit(void) { platform_device_unregister(bvme6000_scsi_device); - driver_unregister(&bvme6000_scsi_driver); + platform_driver_unregister(&bvme6000_scsi_driver); } module_init(bvme6000_scsi_init); diff --git a/drivers/scsi/mvme16x_scsi.c b/drivers/scsi/mvme16x_scsi.c index b264b499d982..7794fc158b17 100644 --- a/drivers/scsi/mvme16x_scsi.c +++ b/drivers/scsi/mvme16x_scsi.c @@ -34,7 +34,7 @@ static struct scsi_host_template mvme16x_scsi_driver_template = { static struct platform_device *mvme16x_scsi_device; static __devinit int -mvme16x_probe(struct device *dev) +mvme16x_probe(struct platform_device *dev) { struct Scsi_Host * host = NULL; struct NCR_700_Host_Parameters *hostdata; @@ -88,7 +88,7 @@ mvme16x_probe(struct device *dev) out_be32(0xfff4202c, v); } - dev_set_drvdata(dev, host); + platform_set_drvdata(dev, host); scsi_scan_host(host); return 0; @@ -102,9 +102,9 @@ mvme16x_probe(struct device *dev) } static __devexit int -mvme16x_device_remove(struct device *dev) +mvme16x_device_remove(struct platform_device *dev) { - struct Scsi_Host *host = dev_get_drvdata(dev); + struct Scsi_Host *host = platform_get_drvdata(dev); struct NCR_700_Host_Parameters *hostdata = shost_priv(host); /* Disable scsi chip ints */ @@ -123,25 +123,27 @@ mvme16x_device_remove(struct device *dev) return 0; } -static struct device_driver mvme16x_scsi_driver = { - .name = "mvme16x-scsi", - .bus = &platform_bus_type, - .probe = mvme16x_probe, - .remove = __devexit_p(mvme16x_device_remove), +static struct platform_driver mvme16x_scsi_driver = { + .driver = { + .name = "mvme16x-scsi", + .owner = THIS_MODULE, + }, + .probe = mvme16x_probe, + .remove = __devexit_p(mvme16x_device_remove), }; static int __init mvme16x_scsi_init(void) { int err; - err = driver_register(&mvme16x_scsi_driver); + err = platform_driver_register(&mvme16x_scsi_driver); if (err) return err; mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi", -1, NULL, 0); if (IS_ERR(mvme16x_scsi_device)) { - driver_unregister(&mvme16x_scsi_driver); + platform_driver_unregister(&mvme16x_scsi_driver); return PTR_ERR(mvme16x_scsi_device); } @@ -151,7 +153,7 @@ static int __init mvme16x_scsi_init(void) static void __exit mvme16x_scsi_exit(void) { platform_device_unregister(mvme16x_scsi_device); - driver_unregister(&mvme16x_scsi_driver); + platform_driver_unregister(&mvme16x_scsi_driver); } module_init(mvme16x_scsi_init); diff --git a/drivers/video/au1100fb.c b/drivers/video/au1100fb.c index 62bd4441b5e0..378f27745a1d 100644 --- a/drivers/video/au1100fb.c +++ b/drivers/video/au1100fb.c @@ -457,7 +457,7 @@ static struct fb_ops au1100fb_ops = /* AU1100 LCD controller device driver */ -static int __init au1100fb_drv_probe(struct device *dev) +static int __init au1100fb_drv_probe(struct platform_device *dev) { struct au1100fb_device *fbdev = NULL; struct resource *regs_res; @@ -475,7 +475,7 @@ static int __init au1100fb_drv_probe(struct device *dev) fbdev->panel = &known_lcd_panels[drv_info.panel_idx]; - dev_set_drvdata(dev, (void*)fbdev); + platform_set_drvdata(dev, (void *)fbdev); /* Allocate region for our registers and map them */ if (!(regs_res = platform_get_resource(to_platform_device(dev), @@ -583,19 +583,19 @@ failed: fb_dealloc_cmap(&fbdev->info.cmap); } kfree(fbdev); - dev_set_drvdata(dev, NULL); + platform_set_drvdata(dev, NULL); return 0; } -int au1100fb_drv_remove(struct device *dev) +int au1100fb_drv_remove(struct platform_device *dev) { struct au1100fb_device *fbdev = NULL; if (!dev) return -ENODEV; - fbdev = (struct au1100fb_device*) dev_get_drvdata(dev); + fbdev = (struct au1100fb_device *) platform_get_drvdata(dev); #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); @@ -620,9 +620,9 @@ int au1100fb_drv_remove(struct device *dev) static u32 sys_clksrc; static struct au1100fb_regs fbregs; -int au1100fb_drv_suspend(struct device *dev, pm_message_t state) +int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state) { - struct au1100fb_device *fbdev = dev_get_drvdata(dev); + struct au1100fb_device *fbdev = platform_get_drvdata(dev); if (!fbdev) return 0; @@ -641,9 +641,9 @@ int au1100fb_drv_suspend(struct device *dev, pm_message_t state) return 0; } -int au1100fb_drv_resume(struct device *dev) +int au1100fb_drv_resume(struct platform_device *dev) { - struct au1100fb_device *fbdev = dev_get_drvdata(dev); + struct au1100fb_device *fbdev = platform_get_drvdata(dev); if (!fbdev) return 0; @@ -663,10 +663,11 @@ int au1100fb_drv_resume(struct device *dev) #define au1100fb_drv_resume NULL #endif -static struct device_driver au1100fb_driver = { - .name = "au1100-lcd", - .bus = &platform_bus_type, - +static struct platform_driver au1100fb_driver = { + .driver = { + .name = "au1100-lcd", + .owner = THIS_MODULE, + }, .probe = au1100fb_drv_probe, .remove = au1100fb_drv_remove, .suspend = au1100fb_drv_suspend, @@ -753,12 +754,12 @@ int __init au1100fb_init(void) return ret; } - return driver_register(&au1100fb_driver); + return platform_driver_register(&au1100fb_driver); } void __exit au1100fb_cleanup(void) { - driver_unregister(&au1100fb_driver); + platform_driver_unregister(&au1100fb_driver); kfree(drv_info.opt_mode); } diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c index 03e57ef88378..0d96f1d2d4c5 100644 --- a/drivers/video/au1200fb.c +++ b/drivers/video/au1200fb.c @@ -1622,7 +1622,7 @@ static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev) /* AU1200 LCD controller device driver */ -static int au1200fb_drv_probe(struct device *dev) +static int au1200fb_drv_probe(struct platform_device *dev) { struct au1200fb_device *fbdev; unsigned long page; @@ -1645,7 +1645,7 @@ static int au1200fb_drv_probe(struct device *dev) /* Allocate the framebuffer to the maximum screen size */ fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8; - fbdev->fb_mem = dma_alloc_noncoherent(dev, + fbdev->fb_mem = dma_alloc_noncoherent(&dev->dev, PAGE_ALIGN(fbdev->fb_len), &fbdev->fb_phys, GFP_KERNEL); if (!fbdev->fb_mem) { @@ -1715,7 +1715,7 @@ failed: return ret; } -static int au1200fb_drv_remove(struct device *dev) +static int au1200fb_drv_remove(struct platform_device *dev) { struct au1200fb_device *fbdev; int plane; @@ -1733,7 +1733,8 @@ static int au1200fb_drv_remove(struct device *dev) /* Clean up all probe data */ unregister_framebuffer(&fbdev->fb_info); if (fbdev->fb_mem) - dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len), + dma_free_noncoherent(&dev->dev, + PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem, fbdev->fb_phys); if (fbdev->fb_info.cmap.len != 0) fb_dealloc_cmap(&fbdev->fb_info.cmap); @@ -1747,22 +1748,24 @@ static int au1200fb_drv_remove(struct device *dev) } #ifdef CONFIG_PM -static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level) +static int au1200fb_drv_suspend(struct platform_device *dev, u32 state) { /* TODO */ return 0; } -static int au1200fb_drv_resume(struct device *dev, u32 level) +static int au1200fb_drv_resume(struct platform_device *dev) { /* TODO */ return 0; } #endif /* CONFIG_PM */ -static struct device_driver au1200fb_driver = { - .name = "au1200-lcd", - .bus = &platform_bus_type, +static struct platform_driver au1200fb_driver = { + .driver = { + .name = "au1200-lcd", + .owner = THIS_MODULE, + }, .probe = au1200fb_drv_probe, .remove = au1200fb_drv_remove, #ifdef CONFIG_PM @@ -1906,12 +1909,12 @@ static int __init au1200fb_init(void) printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n"); #endif - return driver_register(&au1200fb_driver); + return platform_driver_register(&au1200fb_driver); } static void __exit au1200fb_cleanup(void) { - driver_unregister(&au1200fb_driver); + platform_driver_unregister(&au1200fb_driver); } module_init(au1200fb_init); diff --git a/drivers/watchdog/rm9k_wdt.c b/drivers/watchdog/rm9k_wdt.c index f1ae3729a19e..cce1982a1b58 100644 --- a/drivers/watchdog/rm9k_wdt.c +++ b/drivers/watchdog/rm9k_wdt.c @@ -59,8 +59,8 @@ static long wdt_gpi_ioctl(struct file *, unsigned int, unsigned long); static int wdt_gpi_notify(struct notifier_block *, unsigned long, void *); static const struct resource *wdt_gpi_get_resource(struct platform_device *, const char *, unsigned int); -static int __init wdt_gpi_probe(struct device *); -static int __exit wdt_gpi_remove(struct device *); +static int __init wdt_gpi_probe(struct platform_device *); +static int __exit wdt_gpi_remove(struct platform_device *); static const char wdt_gpi_name[] = "wdt_gpi"; @@ -346,10 +346,9 @@ static const struct resource *wdt_gpi_get_resource(struct platform_device *pdv, } /* No hotplugging on the platform bus - use __init */ -static int __init wdt_gpi_probe(struct device *dev) +static int __init wdt_gpi_probe(struct platform_device *pdv) { int res; - struct platform_device * const pdv = to_platform_device(dev); const struct resource * const rr = wdt_gpi_get_resource(pdv, WDT_RESOURCE_REGS, IORESOURCE_MEM), @@ -374,7 +373,7 @@ static int __init wdt_gpi_probe(struct device *dev) return res; } -static int __exit wdt_gpi_remove(struct device *dev) +static int __exit wdt_gpi_remove(struct platform_device *dev) { int res; @@ -387,15 +386,13 @@ static int __exit wdt_gpi_remove(struct device *dev) /* Device driver init & exit */ -static struct device_driver wdt_gpi_driver = { - .name = (char *) wdt_gpi_name, - .bus = &platform_bus_type, - .owner = THIS_MODULE, +static struct platform_driver wgt_gpi_driver = { + .driver = { + .name = wdt_gpi_name, + .owner = THIS_MODULE, + }, .probe = wdt_gpi_probe, - .remove = __exit_p(wdt_gpi_remove), - .shutdown = NULL, - .suspend = NULL, - .resume = NULL, + .remove = __devexit_p(wdt_gpi_remove), }; static int __init wdt_gpi_init_module(void) @@ -403,12 +400,12 @@ static int __init wdt_gpi_init_module(void) atomic_set(&opencnt, 1); if (timeout > MAX_TIMEOUT_SECONDS) timeout = MAX_TIMEOUT_SECONDS; - return driver_register(&wdt_gpi_driver); + return platform_driver_register(&wdt_gpi_driver); } static void __exit wdt_gpi_cleanup_module(void) { - driver_unregister(&wdt_gpi_driver); + platform_driver_unregister(&wdt_gpi_driver); } module_init(wdt_gpi_init_module); -- cgit v1.2.3 From 4995f8ef9d3aac72745e12419d7fbaa8d01b1d81 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Mon, 9 Mar 2009 14:18:52 +0100 Subject: vcs: hook sysfs devices into object lifetime instead of "binding" During bootup performance tracing I noticed many occurrences of vca* device creation and removal, leading to the usual userspace uevent processing, which are, in this case, rather pointless. A simple test showing the kernel timing (not including all the work userspace has to do), gives us these numbers: $ time for i in `seq 1000`; do echo a > /dev/tty2; done real 0m1.142s user 0m0.015s sys 0m0.540s If we move the hook for the vcs* driver core devices from the tty "binding" to the vc allocation/deallocation, which is what the vcs* devices represent, we get the following numbers: $ time for i in `seq 1000`; do echo a > /dev/tty2; done real 0m0.152s user 0m0.030s sys 0m0.072s Cc: Alan Cox Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/char/vc_screen.c | 16 ++++++++-------- drivers/char/vt.c | 5 +++-- include/linux/console.h | 4 ++-- 3 files changed, 13 insertions(+), 12 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c index 4f3b3f95fc42..d94d25c12aa8 100644 --- a/drivers/char/vc_screen.c +++ b/drivers/char/vc_screen.c @@ -479,18 +479,18 @@ static const struct file_operations vcs_fops = { static struct class *vc_class; -void vcs_make_sysfs(struct tty_struct *tty) +void vcs_make_sysfs(int index) { - device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1), NULL, - "vcs%u", tty->index + 1); - device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129), NULL, - "vcsa%u", tty->index + 1); + device_create(vc_class, NULL, MKDEV(VCS_MAJOR, index + 1), NULL, + "vcs%u", index + 1); + device_create(vc_class, NULL, MKDEV(VCS_MAJOR, index + 129), NULL, + "vcsa%u", index + 1); } -void vcs_remove_sysfs(struct tty_struct *tty) +void vcs_remove_sysfs(int index) { - device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 1)); - device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 129)); + device_destroy(vc_class, MKDEV(VCS_MAJOR, index + 1)); + device_destroy(vc_class, MKDEV(VCS_MAJOR, index + 129)); } int __init vcs_init(void) diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 7900bd63b36d..2c1d133819b5 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -778,6 +778,7 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */ } vc->vc_kmalloced = 1; vc_init(vc, vc->vc_rows, vc->vc_cols, 1); + vcs_make_sysfs(currcons); atomic_notifier_call_chain(&vt_notifier_list, VT_ALLOCATE, ¶m); } return 0; @@ -987,7 +988,9 @@ void vc_deallocate(unsigned int currcons) if (vc_cons_allocated(currcons)) { struct vc_data *vc = vc_cons[currcons].d; struct vt_notifier_param param = { .vc = vc }; + atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, ¶m); + vcs_remove_sysfs(currcons); vc->vc_sw->con_deinit(vc); put_pid(vc->vt_pid); module_put(vc->vc_sw->owner); @@ -2775,7 +2778,6 @@ static int con_open(struct tty_struct *tty, struct file *filp) tty->termios->c_iflag |= IUTF8; else tty->termios->c_iflag &= ~IUTF8; - vcs_make_sysfs(tty); release_console_sem(); return ret; } @@ -2795,7 +2797,6 @@ static void con_shutdown(struct tty_struct *tty) BUG_ON(vc == NULL); acquire_console_sem(); vc->vc_tty = NULL; - vcs_remove_sysfs(tty); release_console_sem(); tty_shutdown(tty); } diff --git a/include/linux/console.h b/include/linux/console.h index a67a90cf8268..dcca5339ceb3 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -137,8 +137,8 @@ extern void resume_console(void); int mda_console_init(void); void prom_con_init(void); -void vcs_make_sysfs(struct tty_struct *tty); -void vcs_remove_sysfs(struct tty_struct *tty); +void vcs_make_sysfs(int index); +void vcs_remove_sysfs(int index); /* Some debug stub to catch some of the obvious races in the VT code */ #if 1 -- cgit v1.2.3