[PATCH] drm: fix setting of plane_mask in pan_display_atomic() function for linux-4.4

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From: Xuebing Chen <chenxb_99091@xxxxxxx>

The <include/drm/drm_crtc.h> provides drm_for_each_plane_mask macro and
plane_mask is defined as bitmask of plane indices, such as
1<<drm_plane_index(plane). This patch fixes error setting of plane_mask
in pan_display_atomic() function.

Signed-off-by: Xuebing Chen <chenxb_99091@xxxxxxx>
---
 drivers/gpu/drm/drm_fb_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index e449f22..6a9f7ee 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1256,7 +1256,7 @@ retry:
 			goto fail;
 
 		plane = mode_set->crtc->primary;
-		plane_mask |= drm_plane_index(plane);
+		plane_mask |= 1 << drm_plane_index(plane);
 		plane->old_fb = plane->fb;
 	}
 
-- 
2.7.4

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