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drm/amdgpu: don't grab dev->struct_mutex in pm functions

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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@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Daniel Vetter 2015-07-09 23:32:50 +02:00 committed by Alex Deucher
parent db4448f78d
commit 5516ab86a8
1 changed files with 0 additions and 2 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
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@ -580,7 +580,6 @@ force:
amdgpu_dpm_print_power_state(adev, adev->pm.dpm.requested_ps);
}
mutex_lock(&adev->ddev->struct_mutex);
mutex_lock(&adev->ring_lock);
/* update whether vce is active */
@ -628,7 +627,6 @@ force:
done:
mutex_unlock(&adev->ring_lock);
mutex_unlock(&adev->ddev->struct_mutex);
}
void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable)