From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_modes.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index a371ff8..ba86316 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -787,16 +787,17 @@ 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);
--
1.8.1.5
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