diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-07-09 23:32:48 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-08-17 16:51:12 -0400 |
| commit | 34ddc3e9d1781a4914c673013c0eaca3ae642641 (patch) | |
| tree | e1c96ad0bcfad7d1a43adf9c49408a7c5f86cec6 | |
| parent | 42192a941e427440e642623c64bda4486c527a54 (diff) | |
drm/radeon: Don't take dev->struct_mutex in pm functions
We already grab 2 device-global locks (write-sema rdev->pm.mclk_lock
and rdev->ring_lock), adding another global mutex won't serialize this
code more. And since there's really nothing interesting that gets
protected in radeon by dev->struct mutex (we only have the global z
buffer owners and it's still serializing gem bo destruction in the drm
core - which is irrelevant since radeon uses ttm anyway internally)
this doesn't add protection. 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>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_pm.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index c1ba83a8dd8c..05751f3f8444 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -253,7 +253,6 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev) (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index)) return; - mutex_lock(&rdev->ddev->struct_mutex); down_write(&rdev->pm.mclk_lock); mutex_lock(&rdev->ring_lock); @@ -268,7 +267,6 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev) /* needs a GPU reset dont reset here */ mutex_unlock(&rdev->ring_lock); up_write(&rdev->pm.mclk_lock); - mutex_unlock(&rdev->ddev->struct_mutex); return; } } @@ -304,7 +302,6 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev) mutex_unlock(&rdev->ring_lock); up_write(&rdev->pm.mclk_lock); - mutex_unlock(&rdev->ddev->struct_mutex); } static void radeon_pm_print_states(struct radeon_device *rdev) @@ -1062,7 +1059,6 @@ force: radeon_dpm_print_power_state(rdev, rdev->pm.dpm.requested_ps); } - mutex_lock(&rdev->ddev->struct_mutex); down_write(&rdev->pm.mclk_lock); mutex_lock(&rdev->ring_lock); @@ -1113,7 +1109,6 @@ force: done: mutex_unlock(&rdev->ring_lock); up_write(&rdev->pm.mclk_lock); - mutex_unlock(&rdev->ddev->struct_mutex); } void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable) |