drm/i915/display: Check source height is > 0

The error message suggests that the height of the src rect must be at
least 1. Reject source with height of 0.

Cc: stable@vger.kernel.org
Signed-off-by: Drew Davenport <ddavenport@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221226225246.1.I15dff7bb5a0e485c862eae61a69096caf12ef29f@changeid
(cherry picked from commit 0fe76b198d482b41771a8d17b45fb726d13083cf)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 76490cc59d8f11df931e5c0a57691dcfe600357e..7d07fa3123ece747c046176f585a7091869fb15e 100644 (file)
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -1627,7 +1627,7 @@ static int skl_check_main_surface(struct intel_plane_state *plane_state)
        u32 offset;
        int ret;
 
-       if (w > max_width || w < min_width || h > max_height) {
+       if (w > max_width || w < min_width || h > max_height || h < 1) {
                drm_dbg_kms(&dev_priv->drm,
                            "requested Y/RGB source size %dx%d outside limits (min: %dx1 max: %dx%d)\n",
                            w, h, min_width, max_width, max_height);