[PATCH] rsi_91x_usb: fix uninitialized variable

[PATCH] rsi_91x_usb: fix uninitialized variable

[Gustavo A. R. Silva]

There is a potential execution path in which variable ret is returned
without being properly initialized previously.

Fix this by storing the value returned by function
rsi_usb_master_reg_write into _ret_.

Addresses-Coverity-ID: 1468407 ("Uninitialized scalar variable")
Fixes: 16d3bb7b2f37 ("rsi: disable fw watchdog timer during reset")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/net/wireless/rsi/rsi_91x_usb.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c
index b065438..6ce6b75 100644
--- a/drivers/net/wireless/rsi/rsi_91x_usb.c
+++ b/drivers/net/wireless/rsi/rsi_91x_usb.c
@@ -687,9 +687,10 @@ static int rsi_reset_card(struct rsi_hw *adapter)
 	 */
 	msleep(100);
 
-	if (rsi_usb_master_reg_write(adapter, SWBL_REGOUT,
-				     RSI_FW_WDT_DISABLE_REQ,
-				     RSI_COMMON_REG_SIZE) < 0) {
+	ret = rsi_usb_master_reg_write(adapter, SWBL_REGOUT,
+				       RSI_FW_WDT_DISABLE_REQ,
+				       RSI_COMMON_REG_SIZE);
+	if (ret < 0) {
 		rsi_dbg(ERR_ZONE, "Disabling firmware watchdog timer failed\n");
 		goto fail;
 	}
-- 
2.7.4

Re: rsi_91x: fix uninitialized variable

[Kalle Valo]

"Gustavo A. R. Silva" <gustavo@embeddedor.com> wrote:

> There is a potential execution path in which variable ret is returned
> without being properly initialized previously.
> 
> Fix this by storing the value returned by function
> rsi_usb_master_reg_write into _ret_.
> 
> Addresses-Coverity-ID: 1468407 ("Uninitialized scalar variable")
> Fixes: 16d3bb7b2f37 ("rsi: disable fw watchdog timer during reset")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Patch applied to wireless-drivers-next.git, thanks.

48c6b5c9c118 rsi_91x: fix uninitialized variable

-- 
https://patchwork.kernel.org/patch/10365985/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches