drm/radeon: replace vmram_mutex with mclk_lock v2
It is a rw_semaphore now and only write locked
while changing the clock. Also the lock is renamed
to better reflect what it is protecting.
v2: Keep the ttm_vm_ops on IGPs
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index c43035c..0881131 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -797,9 +797,9 @@
return VM_FAULT_NOPAGE;
}
rdev = radeon_get_rdev(bo->bdev);
- mutex_lock(&rdev->vram_mutex);
+ down_read(&rdev->pm.mclk_lock);
r = ttm_vm_ops->fault(vma, vmf);
- mutex_unlock(&rdev->vram_mutex);
+ up_read(&rdev->pm.mclk_lock);
return r;
}