From: Navid Emamdoost navid.emamdoost@gmail.com
[ 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 --- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 81f83ee4b12b8..121ff705ff60e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -992,7 +992,7 @@ 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)) { @@ -1043,6 +1043,7 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
out_suspend: pm_runtime_mark_last_busy(dev->dev); +pm_put: pm_runtime_put_autosuspend(dev->dev);
return r;