[PATCH 2/5] drm/core: Fix old_fb handling in drm_mode_atomic_ioctl.

[Maarten Lankhorst]

From: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>

plane_mask should be cleared inside the retry loop,
because it gets reset on every retry.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: stable at vger.kernel.org #v4.3
---
 drivers/gpu/drm/drm_atomic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 7bb3845d9974..0ac31b1ecb67 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1446,7 +1446,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
 	struct drm_plane *plane;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *crtc_state;
-	unsigned plane_mask = 0;
+	unsigned plane_mask;
 	int ret = 0;
 	unsigned int i, j;
 
@@ -1486,6 +1486,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
 	state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
 
 retry:
+	plane_mask = 0;
 	copied_objs = 0;
 	copied_props = 0;
 
-- 
2.1.0