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authorZhenyu Wang <zhenyu.z.wang@intel.com>2008-10-17 13:15:48 +0800
committerDave Airlie <airlied@redhat.com>2008-10-23 13:42:26 +1000
commit863842736fb4571b22e0f7f4696bf13eeec57166 (patch)
tree4a3403a8e0577f7dc562f8e2bf7b4071fc0c6be4 /drivers/gpu/drm
parente9d21d7f5ae1e625f3687d88bb50b00478c533ad (diff)
drm: Set cliprects to NULL when changing drawable to having 0 cliprects.
This avoids setting the cliprects pointer to a zero-sized allocation. Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/drm_drawable.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_drawable.c b/drivers/gpu/drm/drm_drawable.c
index 1839c57663c..70b15d1b8f5 100644
--- a/drivers/gpu/drm/drm_drawable.c
+++ b/drivers/gpu/drm/drm_drawable.c
@@ -111,7 +111,9 @@ int drm_update_drawable_info(struct drm_device *dev, void *data, struct drm_file
switch (update->type) {
case DRM_DRAWABLE_CLIPRECTS:
- if (update->num != info->num_rects) {
+ if (update->num == 0)
+ rects = NULL;
+ else if (update->num != info->num_rects) {
rects = drm_alloc(update->num * sizeof(struct drm_clip_rect),
DRM_MEM_BUFS);
} else