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[05/11] drm/i915: Sanity check user framebuffer parameters on creation

Message ID 1281519096-5152-6-git-send-email-chris@chris-wilson.co.uk (mailing list archive)
State Deferred, archived
Headers show

Commit Message

Chris Wilson Aug. 11, 2010, 9:31 a.m. UTC
None
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4b98fa8..c8da303 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5481,8 +5481,25 @@  int intel_framebuffer_init(struct drm_device *dev,
 			   struct drm_mode_fb_cmd *mode_cmd,
 			   struct drm_gem_object *obj)
 {
+	struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
 	int ret;
 
+	if (obj_priv->tiling_mode == I915_TILING_Y)
+		return -EINVAL;
+
+	if (mode_cmd->pitch & 63)
+		return -EINVAL;
+
+	switch (mode_cmd->bpp) {
+	case 8:
+	case 16:
+	case 24:
+	case 32:
+		break;
+	default:
+		return -EINVAL;
+	}
+
 	ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
 	if (ret) {
 		DRM_ERROR("framebuffer init failed %d\n", ret);