From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon, 19 Dec 2011 22:06:47 +0000 (+0200)
Subject: drm: plane: Check that the fb pixel format is supported by the plane
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=62443be626a3a753e6c650abd87e8a39fd569d7e;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

drm: plane: Check that the fb pixel format is supported by the plane

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 80cfe1cbeb99..66a165dac5c4 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1662,6 +1662,7 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 	struct drm_framebuffer *fb;
 	int ret = 0;
 	unsigned int fb_width, fb_height;
+	int i;
 
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return -EINVAL;
@@ -1710,6 +1711,16 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 	}
 	fb = obj_to_fb(obj);
 
+	/* Check whether this plane supports the fb pixel format. */
+	for (i = 0; i < plane->format_count; i++)
+		if (fb->pixel_format == plane->format_types[i])
+			break;
+	if (i == plane->format_count) {
+		DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
+		ret = -EINVAL;
+		goto out;
+	}
+
 	fb_width = fb->width << 16;
 	fb_height = fb->height << 16;