drm/radeon: fix halting UVD
Removing the clock/power or resetting the VCPU can cause
hangs if that happens in the middle of a register write.
Stall the memory and register bus before putting the VCPU
into reset. Keep it in reset when unloading the module or
suspending.
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 6dacec4..524db70 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -6194,7 +6194,7 @@
radeon_vm_manager_fini(rdev);
cik_cp_enable(rdev, false);
cik_sdma_enable(rdev, false);
- r600_uvd_rbc_stop(rdev);
+ r600_uvd_stop(rdev);
radeon_uvd_suspend(rdev);
cik_irq_suspend(rdev);
radeon_wb_disable(rdev);
@@ -6358,6 +6358,7 @@
radeon_vm_manager_fini(rdev);
radeon_ib_pool_fini(rdev);
radeon_irq_kms_fini(rdev);
+ r600_uvd_stop(rdev);
radeon_uvd_fini(rdev);
cik_pcie_gart_fini(rdev);
r600_vram_scratch_fini(rdev);