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drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms

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[ Upstream commit 9ba8923cbbe11564dd1bf9f3602add9a9cfbb5c6 ]

in amdgpu_driver_open_kms the call to pm_runtime_get_sync increments the
counter even in case of failure, leading to incorrect
ref count. In case of failure, decrement the ref count before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Navid Emamdoost 2020-06-14 02:12:29 -05:00 committed by Greg Kroah-Hartman
parent 40d0bf2b6e
commit c911da7b66
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
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@ -976,7 +976,7 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
r = pm_runtime_get_sync(dev->dev);
if (r < 0)
return r;
goto pm_put;
fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
if (unlikely(!fpriv)) {
@ -1027,6 +1027,7 @@ error_pasid:
out_suspend:
pm_runtime_mark_last_busy(dev->dev);
pm_put:
pm_runtime_put_autosuspend(dev->dev);
return r;