From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 8 Aug 2010 11:34:44 +0000 (+0100)
Subject: drm/i915: Sanity check user framebuffer parameters on creation
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=57cd6508da65adabcb14be6ba3b9370d750b647d;p=linux-beck.git

drm/i915: Sanity check user framebuffer parameters on creation

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3a03c62496d3..adce19304eee 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5371,8 +5371,25 @@ 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);