openwrt/target/linux/bcm27xx/patches-6.6/950-0337-media-bcm2835-unicam-Set-ret-on-error-path-in-unicam.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

44 lines
1.7 KiB
Diff

From ee3dafdd4448177c846993302d211adf9cfc55fd Mon Sep 17 00:00:00 2001
From: Nathan Chancellor <nathan@kernel.org>
Date: Mon, 31 Jan 2022 17:23:38 -0700
Subject: [PATCH 0337/1085] media: bcm2835-unicam: Set ret on error path in
unicam_async_complete()
Clang warns:
drivers/media/platform/bcm2835/bcm2835-unicam.c:3109:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (!source_pads) {
^~~~~~~~~~~~
drivers/media/platform/bcm2835/bcm2835-unicam.c:3152:9: note: uninitialized use occurs here
return ret;
^~~
drivers/media/platform/bcm2835/bcm2835-unicam.c:3109:2: note: remove the 'if' if its condition is always false
if (!source_pads) {
^~~~~~~~~~~~~~~~~~~
drivers/media/platform/bcm2835/bcm2835-unicam.c:3091:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
1 warning generated.
When the if condition is true, ret will be used uninitialized, which
could result in undesirable behavior. Set ret to -ENODEV on the error
path, which is a standard error code for the ->complete() callback.
Fixes: d056e86eb35f ("media/bcm2835-unicam: Parse pad numbers correctly")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/media/platform/bcm2835/bcm2835-unicam.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
@@ -3108,6 +3108,7 @@ static int unicam_async_complete(struct
}
if (!source_pads) {
unicam_err(unicam, "No source pads on sensor.\n");
+ ret = -ENODEV;
goto unregister;
}