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| author | Guchun Chen <guchun.chen@amd.com> | 2021-03-30 22:02:06 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:49:46 -0400 |
| commit | fd6ecc906960c1063c17f23b0b8dad5f6dcea4bc (patch) | |
| tree | 9e42d98804e2c08d7fe2467a7c9324e8895dd76a | |
| parent | 9973de10b5b70b0e5ed9e01e3b392dfc65ab215d (diff) | |
drm/radeon: avoid potential null pointer access
Leverage the same logic from amdgpu_ttm_tt_unpin_userptr.
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index c84e128daff8..cdb6d3efd07d 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -415,7 +415,7 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_device *bdev, struct ttm_tt * DMA_BIDIRECTIONAL : DMA_TO_DEVICE; /* double check that we don't free the table twice */ - if (!ttm->sg->sgl) + if (!ttm->sg || !ttm->sg->sgl) return; /* free the sg table and pages again */ |