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drm/msm: fix msm_gem_prime_get_sg_table() 

We need to return a new sgt, since the caller takes ownership of it.

Reported-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2015-07-23 13:44:56 -04:00
parent 520e8bfc35
commit ac45146733
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/msm/msm_gem_prime.c
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@ -23,8 +23,12 @@
struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj) struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
{ {
struct msm_gem_object *msm_obj = to_msm_bo(obj); struct msm_gem_object *msm_obj = to_msm_bo(obj);
BUG_ON(!msm_obj->sgt); /* should have already pinned! */ int npages = obj->size >> PAGE_SHIFT;
return msm_obj->sgt;
if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */
return NULL;
return drm_prime_pages_to_sg(msm_obj->pages, npages);
} }
void *msm_gem_prime_vmap(struct drm_gem_object *obj) void *msm_gem_prime_vmap(struct drm_gem_object *obj)