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>

1 files changed, 5 insertions, 4 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);