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author | Stefan Berger <stefanb@linux.vnet.ibm.com> | 2011-11-11 17:57:03 (GMT) |
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committer | Rajiv Andrade <srajiv@linux.vnet.ibm.com> | 2011-11-16 11:42:57 (GMT) |
commit | d97c6ade5926afb6d52df36c33a3491d62cd0dc0 (patch) | |
tree | 128f8b39c5d976149f6eb167ea8b03b59d3b40d8 /drivers/char/tpm | |
parent | 2b30a90f6c358714b9d6e628ac92e514917f93a1 (diff) | |
download | linux-d97c6ade5926afb6d52df36c33a3491d62cd0dc0.tar.xz |
tpm: Cleanup tpm_continue_selftest
Cleanup the tpm_continue_selftest function.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r-- | drivers/char/tpm/tpm.c | 30 | ||||
-rw-r--r-- | drivers/char/tpm/tpm.h | 2 |
2 files changed, 24 insertions, 8 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index b6c4a32..9bd4668 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -611,15 +611,31 @@ duration: } EXPORT_SYMBOL_GPL(tpm_get_timeouts); -void tpm_continue_selftest(struct tpm_chip *chip) +#define TPM_ORD_CONTINUE_SELFTEST 83 +#define CONTINUE_SELFTEST_RESULT_SIZE 10 + +static struct tpm_input_header continue_selftest_header = { + .tag = TPM_TAG_RQU_COMMAND, + .length = cpu_to_be32(10), + .ordinal = cpu_to_be32(TPM_ORD_CONTINUE_SELFTEST), +}; + +/** + * tpm_continue_selftest -- run TPM's selftest + * @chip: TPM chip to use + * + * Returns 0 on success, < 0 in case of fatal error or a value > 0 representing + * a TPM error code. + */ +int tpm_continue_selftest(struct tpm_chip *chip) { - u8 data[] = { - 0, 193, /* TPM_TAG_RQU_COMMAND */ - 0, 0, 0, 10, /* length */ - 0, 0, 0, 83, /* TPM_ORD_ContinueSelfTest */ - }; + int rc; + struct tpm_cmd_t cmd; - tpm_transmit(chip, data, sizeof(data)); + cmd.header.in = continue_selftest_header; + rc = transmit_cmd(chip, &cmd, CONTINUE_SELFTEST_RESULT_SIZE, + "continue selftest"); + return rc; } EXPORT_SYMBOL_GPL(tpm_continue_selftest); diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 4747b68..5d2be8a 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -281,7 +281,7 @@ ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *); extern int tpm_get_timeouts(struct tpm_chip *); extern void tpm_gen_interrupt(struct tpm_chip *); -extern void tpm_continue_selftest(struct tpm_chip *); +extern int tpm_continue_selftest(struct tpm_chip *); extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32); extern struct tpm_chip* tpm_register_hardware(struct device *, const struct tpm_vendor_specific *); |