Re: [PATCH] drm/amdgpu: Add missing pm_runtime_put_autosuspend

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On 1/18/2022 5:31 PM, Yongzhi Liu wrote:
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code, thus a matching decrement is needed
on the error handling path to keep the counter balanced.

Signed-off-by: Yongzhi Liu <lyz_cs@xxxxxxxxxx>

Thanks!

Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx>

---
  drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 9aea1cc..4b950de 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1120,8 +1120,10 @@ static ssize_t amdgpu_debugfs_gfxoff_read(struct file *f, char __user *buf,
  		return -EINVAL;
r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
-	if (r < 0)
+	if (r < 0) {
+		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
  		return r;
+	}
while (size) {
  		uint32_t value;




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