[PATCH 18/18] drm/amdgpu: don't grab dev->struct_mutex in pm functions

Thierry Reding thierry.reding at gmail.com
Mon Aug 10 04:00:57 PDT 2015


On Thu, Jul 09, 2015 at 11:32:50PM +0200, Daniel Vetter wrote:
> Similar to radeon, except that amdgpu doesn't even use struct_mutex to
> protect anything like the shared z buffer (sane gpu architecture,
> yay!). And the code already grabs the globa adev->ring_lock, so this
> code can't race with itself. Which makes struct_mutex completely
> redundnant. Remove it.
> 
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Cc: "Christian K├Ânig" <christian.koenig at amd.com>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 2 --
>  1 file changed, 2 deletions(-)

Reviewed-by: Thierry Reding <treding at nvidia.com>
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