[PATCH v11 02/16] tpm: fix invalid return value in pubek_show()

Jarkko Sakkinen jarkko.sakkinen at linux.intel.com
Tue Feb 5 22:47:09 UTC 2019

Return zero when tpm_buf_init() fails as we do for other functions in

Fixes: da379f3c1db0c ("tpm: migrate pubek_show to struct tpm_buf")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com>
Reviewed-by: Stefan Berger <stefanb at linux.ibm.com>
Tested-by: Stefan Berger <stefanb at linux.ibm.com>
Reviewed-by: Jerry Snitselaar <jsnitsel at redhat.com>
Reviewed-by: James Bottomley <James.Bottomley at HansenPartnership.com>
 drivers/char/tpm/tpm-sysfs.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index c2769e55cb6c..7ed7eb6f906a 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -47,9 +47,8 @@ static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
 	memset(&anti_replay, 0, sizeof(anti_replay));
-	rc = tpm_buf_init(&tpm_buf, TPM_TAG_RQU_COMMAND, TPM_ORD_READPUBEK);
-	if (rc)
-		return rc;
+	if (tpm_buf_init(&tpm_buf, TPM_TAG_RQU_COMMAND, TPM_ORD_READPUBEK))
+		return 0;
 	tpm_buf_append(&tpm_buf, anti_replay, sizeof(anti_replay));

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