[PATCH 3/8] drm/msm: Clear msm_obj->sgt in put_pages()

[Rob Clark]

From: Rob Clark <robdclark at chromium.org>

Currently this doesn't matter since we keep the pages pinned until the
object is destroyed.  But when we start unpinning pages to allow objects
to be evicted to swap, it will.

Signed-off-by: Rob Clark <robdclark at chromium.org>
---
 drivers/gpu/drm/msm/msm_gem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index d5abe8aa9978..71530a89b675 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -162,6 +162,7 @@ static void put_pages(struct drm_gem_object *obj)
 
 			sg_free_table(msm_obj->sgt);
 			kfree(msm_obj->sgt);
+			msm_obj->sgt = NULL;
 		}
 
 		if (use_pages(obj))
-- 
2.30.2