From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Passing negative width/hight to scale factor calculations is not
legal. Let's WARN if that happens.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_rect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_rect.c b/drivers/gpu/drm/drm_rect.c
index a8e2c8603945..512199b60728 100644
--- a/drivers/gpu/drm/drm_rect.c
+++ b/drivers/gpu/drm/drm_rect.c
@@ -100,7 +100,7 @@ static int drm_calc_scale(int src, int dst)
{
int scale = 0;
- if (src < 0 || dst < 0)
+ if (WARN_ON(src < 0 || dst < 0))
return -EINVAL;
if (dst == 0)
--
2.7.4
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