[PATCH] drm/amd/display: Fix missing unlock in dm_handle_mst_sideband_msg_ready_event()

[Alex Deucher]

Already applied the fix for this from Dan.

Thanks!

Alex

On Tue, Jul 25, 2023 at 9:21 AM Yang Yingliang <yangyingliang at huawei.com> wrote:
>
> Add missing mutex_unlock() in error path in
> dm_handle_mst_sideband_msg_ready_event().
>
> Fixes: 4f6d9e38c4d2 ("drm/amd/display: Add polling method to handle MST reply packet")
> Signed-off-by: Yang Yingliang <yangyingliang at huawei.com>
> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> index 1abdec14344e..cddb91cf3dde 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> @@ -707,6 +707,7 @@ void dm_handle_mst_sideband_msg_ready_event(
>
>                         if (retry == 3) {
>                                 DRM_ERROR("Failed to ack MST event.\n");
> +                               mutex_unlock(&aconnector->handle_mst_msg_ready);
>                                 return;
>                         }
>
> --
> 2.25.1
>