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| author | Ville Syrjälä | 2016-07-26 18:06:56 +0200 |
|---|---|---|
| committer | Sean Paul | 2016-08-08 20:17:56 +0200 |
| commit | 1e1a5f8f8c3a4b24b3fc0340880cf1e3949f4997 (patch) | |
| tree | 70cee84ece12318cb3d50c69a490925c7da115c8 /drivers/gpu/drm | |
| parent | drm: BIT(DRM_ROTATE_?) -> DRM_ROTATE_? (diff) | |
| download | kernel-qcow2-linux-1e1a5f8f8c3a4b24b3fc0340880cf1e3949f4997.tar.gz kernel-qcow2-linux-1e1a5f8f8c3a4b24b3fc0340880cf1e3949f4997.tar.xz kernel-qcow2-linux-1e1a5f8f8c3a4b24b3fc0340880cf1e3949f4997.zip | |
drm: Warn about negative sizes when calculating scale factor
Passing negative width/hight to scale factor calculations is not
legal. Let's WARN if that happens.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1469549224-1860-2-git-send-email-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_rect.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_rect.c b/drivers/gpu/drm/drm_rect.c index 4063f6e4ea9f..73e53a8d1b37 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) |