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drm/msm: return an error pointer in msm_gem_prime_get_sg_table()

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[ Upstream commit cf575e3161 ]

The msm_gem_prime_get_sg_table() needs to return error pointers on
error.  This is called from drm_gem_map_dma_buf() and returning a
NULL will lead to a crash in that function.

Fixes: ac45146733 ("drm/msm: fix msm_gem_prime_get_sg_table()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/485023/
Link: https://lore.kernel.org/r/YnOmtS5tfENywR9m@kili
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter
2022-05-05 13:28:05 +03:00
committed by Greg Kroah-Hartman
parent 22d8424913
commit ab888b1a9a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/msm/msm_gem_prime.c
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@ -17,7 +17,7 @@ struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
int npages = obj->size >> PAGE_SHIFT; int npages = obj->size >> PAGE_SHIFT;
if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */ if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */
return NULL; return ERR_PTR(-ENOMEM);
return drm_prime_pages_to_sg(msm_obj->pages, npages); return drm_prime_pages_to_sg(msm_obj->pages, npages);
} }