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authorVille Syrjälä <ville.syrjala@linux.intel.com>2013-05-31 12:17:06 +0000
committerDave Airlie <airlied@redhat.com>2013-06-11 08:34:23 +1000
commit72e45e9267bfbf299f2f4c14c8c923a4f6444030 (patch)
treea3f74ce4b851a3178b7e43cb8a43ffa208056863 /drivers/gpu/drm/drm_modes.c
parentf6fb754dc6f1def4bdc28f9391d835860612b9b4 (diff)
drm: Preserve the list head in drm_mode_copy
Preserve the destination mode's list head in drm_mode_copy. Just in case someone decides that it's a good idea to overwrite a mode which happens to be on some list, Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
-rw-r--r--drivers/gpu/drm/drm_modes.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 09785422e65..69153385c63 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -789,16 +789,17 @@ EXPORT_SYMBOL(drm_mode_set_crtcinfo);
* LOCKING:
* None.
*
- * Copy an existing mode into another mode, preserving the object id
- * of the destination mode.
+ * Copy an existing mode into another mode, preserving the object id and
+ * list head of the destination mode.
*/
void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src)
{
int id = dst->base.id;
+ struct list_head head = dst->head;
*dst = *src;
dst->base.id = id;
- INIT_LIST_HEAD(&dst->head);
+ dst->head = head;
}
EXPORT_SYMBOL(drm_mode_copy);