tpm_tis: Check return code from getting timeouts/durations

Check the return code from getting the TPM's timeouts and durations
and reject the driver if they could not be read.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index d30d5c3c6c02..34832bc74649 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -614,7 +614,11 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
                 dev_dbg(dev, "\tData Avail Int Support\n");
 
         /* get the timeouts before testing for irqs */
-        tpm_get_timeouts(chip);
+        if (tpm_get_timeouts(chip)) {
+                dev_err(dev, "Could not get TPM timeouts and durations\n");
+                rc = -ENODEV;
+                goto out_err;
+        }
 
         if (tpm_do_selftest(chip)) {
                 dev_err(dev, "TPM self test failed\n");