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| author | Stefan Berger <stefanb@linux.vnet.ibm.com> | 2016-02-29 14:53:02 +0100 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-06-25 16:26:35 +0200 |
| commit | 15516788e581eb32ec1c50e5f00aba3faf95d817 (patch) | |
| tree | fc21e9a76367a73ba36b1e9315ca8fd741c544d8 /drivers/char/tpm/tpm.h | |
| parent | tpm: Split out the devm stuff from tpmm_chip_alloc (diff) | |
| download | linux-15516788e581eb32ec1c50e5f00aba3faf95d817.tar.xz linux-15516788e581eb32ec1c50e5f00aba3faf95d817.zip | |
tpm: Replace device number bitmap with IDR
Replace the device number bitmap with IDR. Extend the number of devices we
can create to 64k.
Since an IDR allows us to associate a pointer with an ID, we use this now
to rewrite tpm_chip_find_get() to simply look up the chip pointer by the
given device ID.
Protect the IDR calls with a mutex.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm/tpm.h')
| -rw-r--r-- | drivers/char/tpm/tpm.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 5fcf7885a4b9..928b47f58771 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -34,7 +34,7 @@ enum tpm_const { TPM_MINOR = 224, /* officially assigned */ TPM_BUFSIZE = 4096, - TPM_NUM_DEVICES = 256, + TPM_NUM_DEVICES = 65536, TPM_RETRY = 50, /* 5 seconds */ }; @@ -195,8 +195,6 @@ struct tpm_chip { acpi_handle acpi_dev_handle; char ppi_version[TPM_PPI_VERSION_LEN + 1]; #endif /* CONFIG_ACPI */ - - struct list_head list; }; #define to_tpm_chip(d) container_of(d, struct tpm_chip, dev) @@ -492,6 +490,7 @@ static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value) extern struct class *tpm_class; extern dev_t tpm_devt; extern const struct file_operations tpm_fops; +extern struct idr dev_nums_idr; ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *); ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, |