[PATCH AUTOSEL 4.19 07/23] drm/framebuffer: Fix use of uninitialized variable

[Sasha Levin]

From: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>

[ 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@xxxxxxxxxxxxxxxx>
Acked-by: Maxime Ripard <mripard@xxxxxxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20231103-uninit-fixes-v2-2-c22b2444f5f5@xxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 b64a6ffc0aed..9fc4af4b10a6 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -538,7 +538,7 @@ int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
 	struct drm_framebuffer *fb;
 	unsigned flags;
 	int num_clips;
-	int ret;
+	int ret = 0;
 
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return -EINVAL;
-- 
2.43.0