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drm/msm: Gracefully handle failure in _msm_gem_kernel_new

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If any of the function calls in _msm_gem_kernel_new fail we need
to make sure to dereference the GEM object with the appropriate
function for the current locking state.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Jordan Crouse 2018-11-02 09:25:19 -06:00 committed by Rob Clark
parent 546ec7b471
commit 93f7abf19d
1 changed files with 12 additions and 6 deletions
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18
drivers/gpu/drm/msm/msm_gem.c
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@ -1041,23 +1041,29 @@ static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size,
if (iova) { if (iova) {
ret = msm_gem_get_iova(obj, aspace, iova); ret = msm_gem_get_iova(obj, aspace, iova);
if (ret) { if (ret)
drm_gem_object_put(obj); goto err;
return ERR_PTR(ret);
}
} }
vaddr = msm_gem_get_vaddr(obj); vaddr = msm_gem_get_vaddr(obj);
if (IS_ERR(vaddr)) { if (IS_ERR(vaddr)) {
msm_gem_put_iova(obj, aspace); msm_gem_put_iova(obj, aspace);
drm_gem_object_put(obj); ret = PTR_ERR(vaddr);
return ERR_CAST(vaddr); goto err;
} }
if (bo) if (bo)
*bo = obj; *bo = obj;
return vaddr; return vaddr;
err:
if (locked)
drm_gem_object_put(obj);
else
drm_gem_object_put_unlocked(obj);
return ERR_PTR(ret);
} }
void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size,