linux-kernel - [PATCH] scsi: qla2xxx: initialize value

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Date:   Mon,  5 Oct 2020 07:45:44 -0700
From:   trix@...hat.com
To:     njavali@...vell.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, natechancellor@...il.com,
        ndesaulniers@...gle.com
Cc:     GR-QLogic-Storage-Upstream@...vell.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Tom Rix <trix@...hat.com>
Subject: [PATCH] scsi: qla2xxx: initialize value

From: Tom Rix <trix@...hat.com>

clang static analysis reports this problem:

qla_nx2.c:694:3: warning: 6th function call argument is
  an uninitialized value
        ql_log(ql_log_fatal, vha, 0xb090,
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In qla8044_poll_reg(), when reading the reg fails, the
error is reported by reusing the timeout error reporter.
Because the value is unset, a garbage value will be
reported.  So initialize the value.

Signed-off-by: Tom Rix <trix@...hat.com>
---
 drivers/scsi/qla2xxx/qla_nx2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_nx2.c b/drivers/scsi/qla2xxx/qla_nx2.c
index 3a415b12dcec..01ccd4526707 100644
--- a/drivers/scsi/qla2xxx/qla_nx2.c
+++ b/drivers/scsi/qla2xxx/qla_nx2.c
@@ -659,7 +659,7 @@ static int
 qla8044_poll_reg(struct scsi_qla_host *vha, uint32_t addr,
 	int duration, uint32_t test_mask, uint32_t test_result)
 {
-	uint32_t value;
+	uint32_t value = 0;
 	int timeout_error;
 	uint8_t retries;
 	int ret_val = QLA_SUCCESS;
-- 
2.18.1