From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Fri, 11 Nov 2011 17:57:05 +0000 (-0500)
Subject: tpm_tis: Check return code from getting timeouts/durations
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7f326ed7ff221a109bf89288bf6c8f0142e3e75c;p=mv-sheeva.git

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 d30d5c3c6c0..34832bc7464 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");