[PATCH 6.1 115/219] drm/framebuffer: Fix use of uninitialized variable

Greg Kroah-Hartman
2024-02-03T04:09:59Z

From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

[ Upstream commit f9af8f0c1dc567a5a6a6318ff324c45d80d4a60f ]

smatch reports:

drivers/gpu/drm/drm_framebuffer.c:654 drm_mode_getfb2_ioctl() error: uninitialized symbol 'ret'.

'ret' is possibly not set when there are no errors, causing the error
above. I can't say if that ever happens in real-life, but in any case I
think it is good to initialize 'ret' to 0.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231103-uninit-fixes-v2-2-c22b2444f5f5@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/drm_framebuffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 2dd97473ca10..72ad1715f8e7 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -570,7 +570,7 @@ int drm_mode_getfb2_ioctl(struct drm_device *dev,
struct drm_mode_fb_cmd2 *r = data;
struct drm_framebuffer *fb;
unsigned int i;
- int ret;
+ int ret = 0;

if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
--
2.43.0