Thread (6 messages) 6 messages, 3 authors, 2023-01-26
STALE1262d LANDED

[PATCH 1/2] pinctrl: mediatek: Initialize variable pullen and pullup to zero

From: Guodong Liu <hidden>
Date: 2023-01-18 06:46:35
Also in: linux-gpio, linux-mediatek, lkml
Subsystem: pin control subsystem, pin controller - mediatek, the rest · Maintainers: Linus Walleij, Sean Wang, Linus Torvalds

Coverity spotted that pullen and pullup is not initialized to zero in
mtk_pctrl_show_one_pin. The uninitialized variable pullen is used in
assignment statement "rsel = pullen;" in mtk_pctrl_show_one_pin, and
Uninitialized variable pullup is used when calling scnprintf. Fix this
coverity by initializing pullen and pullup as zero.

Fixes: 184d8e13f9b1 ("pinctrl: mediatek: Add support for pin configuration
dump via debugfs.")
Signed-off-by: Guodong Liu <redacted>
---
 drivers/pinctrl/mediatek/pinctrl-paris.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
index f2ce3f626dd1..e736c1610f3c 100644
--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -635,7 +635,7 @@ static int mtk_hw_get_value_wrap(struct mtk_pinctrl *hw, unsigned int gpio, int
 ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
 	unsigned int gpio, char *buf, unsigned int buf_len)
 {
-	int pinmux, pullup, pullen, len = 0, r1 = -1, r0 = -1, rsel = -1;
+	int pinmux, pullup = 0, pullen = 0, len = 0, r1 = -1, r0 = -1, rsel = -1;
 	const struct mtk_pin_desc *desc;
 	u32 try_all_type = 0;
 
-- 
2.25.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help