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>
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index d30d5c3..34832bc7 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -614,7 +614,11 @@
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");