lkml.org 
[lkml]   [2020]   [Sep]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.8 029/255] drm/amdgpu/fence: fix ref count leak when pm_runtime_get_sync fails
Date
From: Alex Deucher <alexander.deucher@amd.com>

[ Upstream commit e520d3e0d2818aafcdf9d8b60916754d8fedc366 ]

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.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 3414e119f0cbf..f5a6ee7c2eaa3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -754,8 +754,10 @@ static int amdgpu_debugfs_gpu_recover(struct seq_file *m, void *data)
int r;

r = pm_runtime_get_sync(dev->dev);
- if (r < 0)
+ if (r < 0) {
+ pm_runtime_put_autosuspend(dev->dev);
return 0;
+ }

seq_printf(m, "gpu recover\n");
amdgpu_device_gpu_recover(adev, NULL);
--
2.25.1


\
 
 \ /
  Last update: 2020-09-01 18:13    [W:0.825 / U:0.936 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site