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authorDaniel Vetter <daniel.vetter@ffwll.ch>2015-07-10 00:32:48 +0300
committerAlex Deucher <alexander.deucher@amd.com>2015-08-17 23:51:12 +0300
commit34ddc3e9d1781a4914c673013c0eaca3ae642641 (patch)
treee1c96ad0bcfad7d1a43adf9c49408a7c5f86cec6 /drivers/gpu/drm/radeon/radeon_pm.c
parent42192a941e427440e642623c64bda4486c527a54 (diff)
downloadlinux-34ddc3e9d1781a4914c673013c0eaca3ae642641.tar.xz
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>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_pm.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_pm.c5
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)