From: Yang Yingliang yangyingliang@huawei.com
[ Upstream commit b85e285e3d6352b02947fc1b72303673dfacb0aa ]
As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put().
So before returning from amdgpu_device_resume|suspend_display_audio(), pci_dev_put() is called to avoid refcount leak.
Fixes: 3f12acc8d6d4 ("drm/amdgpu: put the audio codec into suspend state before gpu reset V3") Reviewed-by: Evan Quan evan.quan@amd.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index e0c960cc1d2e..f04e698e631c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -5004,6 +5004,8 @@ static void amdgpu_device_resume_display_audio(struct amdgpu_device *adev) pm_runtime_enable(&(p->dev)); pm_runtime_resume(&(p->dev)); } + + pci_dev_put(p); }
static int amdgpu_device_suspend_display_audio(struct amdgpu_device *adev) @@ -5042,6 +5044,7 @@ static int amdgpu_device_suspend_display_audio(struct amdgpu_device *adev)
if (expires < ktime_get_mono_fast_ns()) { dev_warn(adev->dev, "failed to suspend display audio\n"); + pci_dev_put(p); /* TODO: abort the succeeding gpu reset? */ return -ETIMEDOUT; } @@ -5049,6 +5052,7 @@ static int amdgpu_device_suspend_display_audio(struct amdgpu_device *adev)
pm_runtime_disable(&(p->dev));
+ pci_dev_put(p); return 0; }