netdev - [PATCH net-next v2 1/4] ptp: ocp: Fix uninitialized variable warning spotted by clang.

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Date:   Mon, 16 Aug 2021 15:13:34 -0700
From:   Jonathan Lemon <jonathan.lemon@...il.com>
To:     kuba@...nel.org, davem@...emloft.net, richardcochran@...il.com
Cc:     kernel-team@...com, netdev@...r.kernel.org
Subject: [PATCH net-next v2 1/4] ptp: ocp: Fix uninitialized variable warning spotted by clang.

If attempting to flash the firmware with a blob of size 0,
the entire write loop is skipped and the uninitialized err
is returned.  Fix by setting to 0 first.

Fixes: 773bda964921 ("ptp: ocp: Expose various resources on the
timecard.")
Signed-off-by: Jonathan Lemon <jonathan.lemon@...il.com>
---
 drivers/ptp/ptp_ocp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 92edf772feed..9e4317d1184f 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -763,7 +763,7 @@ ptp_ocp_devlink_flash(struct devlink *devlink, struct device *dev,
 	size_t off, len, resid, wrote;
 	struct erase_info erase;
 	size_t base, blksz;
-	int err;
+	int err = 0;

 	off = 0;
 	base = bp->flash_start;
-- 
2.31.1