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authorStefan Berger <stefanb@linux.vnet.ibm.com>2011-11-11 21:57:02 +0400
committerRajiv Andrade <srajiv@linux.vnet.ibm.com>2011-11-16 15:42:54 +0400
commit2b30a90f6c358714b9d6e628ac92e514917f93a1 (patch)
treed5fee00222aea732edd6760eb5fe78675e5dc2e2 /drivers/char/tpm
parente163bc8e4a0cd1cdffadb58253f7651201722d56 (diff)
downloadlinux-2b30a90f6c358714b9d6e628ac92e514917f93a1.tar.xz
tpm: Have tpm_get_timeouts return an error code
Have the tpm_get_timeouts function return an error code. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm.c9
-rw-r--r--drivers/char/tpm/tpm.h2
2 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index e53af7638186..b6c4a320cfde 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -527,7 +527,7 @@ void tpm_gen_interrupt(struct tpm_chip *chip)
}
EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
-void tpm_get_timeouts(struct tpm_chip *chip)
+int tpm_get_timeouts(struct tpm_chip *chip)
{
struct tpm_cmd_t tpm_cmd;
struct timeout_t *timeout_cap;
@@ -549,7 +549,7 @@ void tpm_get_timeouts(struct tpm_chip *chip)
if (be32_to_cpu(tpm_cmd.header.out.return_code) != 0 ||
be32_to_cpu(tpm_cmd.header.out.length)
!= sizeof(tpm_cmd.header.out) + sizeof(u32) + 4 * sizeof(u32))
- return;
+ return -EINVAL;
timeout_cap = &tpm_cmd.params.getcap_out.cap.timeout;
/* Don't overwrite default if value is 0 */
@@ -580,12 +580,12 @@ duration:
rc = transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
"attempting to determine the durations");
if (rc)
- return;
+ return rc;
if (be32_to_cpu(tpm_cmd.header.out.return_code) != 0 ||
be32_to_cpu(tpm_cmd.header.out.length)
!= sizeof(tpm_cmd.header.out) + sizeof(u32) + 3 * sizeof(u32))
- return;
+ return -EINVAL;
duration_cap = &tpm_cmd.params.getcap_out.cap.duration;
chip->vendor.duration[TPM_SHORT] =
@@ -607,6 +607,7 @@ duration:
chip->vendor.duration_adjusted = true;
dev_info(chip->dev, "Adjusting TPM timeout parameters.");
}
+ return 0;
}
EXPORT_SYMBOL_GPL(tpm_get_timeouts);
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 9c4163cfa3ce..4747b68c0c1b 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -279,7 +279,7 @@ struct tpm_cmd_t {
ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *);
-extern void tpm_get_timeouts(struct tpm_chip *);
+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 unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);