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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 07:14:38 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 07:14:38 +0100 |
| commit | bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71 (patch) | |
| tree | 2f6dffd2d3e4dd67355a224de7e7a960335a92fd /drivers/char/tpm | |
| parent | MAINTAINERS: Add PowerPC patterns (diff) | |
| parent | Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel... (diff) | |
| download | linux-bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71.tar.xz linux-bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71.zip | |
Merge commit 'origin/master' into next
Conflicts:
include/linux/kvm.h
Diffstat (limited to 'drivers/char/tpm')
| -rw-r--r-- | drivers/char/tpm/tpm.c | 2 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm_tis.c | 11 |
2 files changed, 11 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 47c2d2763456..f06bb37defb1 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -31,7 +31,7 @@ enum tpm_const { TPM_MINOR = 224, /* officially assigned */ - TPM_BUFSIZE = 2048, + TPM_BUFSIZE = 4096, TPM_NUM_DEVICES = 256, }; diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index 0b73e4ec1add..2405f17b29dd 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -257,6 +257,10 @@ out: return size; } +static int itpm; +module_param(itpm, bool, 0444); +MODULE_PARM_DESC(itpm, "Force iTPM workarounds (found on some Lenovo laptops)"); + /* * If interrupts are used (signaled by an irq set in the vendor structure) * tpm.c can skip polling for the data to be available as the interrupt is @@ -293,7 +297,7 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len) wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c, &chip->vendor.int_queue); status = tpm_tis_status(chip); - if ((status & TPM_STS_DATA_EXPECT) == 0) { + if (!itpm && (status & TPM_STS_DATA_EXPECT) == 0) { rc = -EIO; goto out_err; } @@ -467,6 +471,10 @@ static int tpm_tis_init(struct device *dev, resource_size_t start, "1.2 TPM (device-id 0x%X, rev-id %d)\n", vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0))); + if (itpm) + dev_info(dev, "Intel iTPM workaround enabled\n"); + + /* Figure out the capabilities */ intfcaps = ioread32(chip->vendor.iobase + @@ -629,6 +637,7 @@ static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = { {"", 0}, /* User Specified */ {"", 0} /* Terminator */ }; +MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl); static __devexit void tpm_tis_pnp_remove(struct pnp_dev *dev) { |