From: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date: Mon, 30 Mar 2015 11:05:43 +0000 (+0300)
Subject: drm/atomic: Don't try to free a NULL state
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a0211bb482c346820506c546a6a58b8357999a99;p=linux-beck.git

drm/atomic: Don't try to free a NULL state

Consistently with other free functions, handle the NULL case without
oopsing.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 00ea88151c01..57efdbeff008 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -173,6 +173,9 @@ EXPORT_SYMBOL(drm_atomic_state_clear);
  */
 void drm_atomic_state_free(struct drm_atomic_state *state)
 {
+	if (!state)
+		return;
+
 	drm_atomic_state_clear(state);
 
 	DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state);