From: Alex Deucher <alexander.deuc...@amd.com>

3.4.108-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit c320bb5f6dc0cb88a811cbaf839303e0a3916a92 upstream.

To make sure the writes go through the pci bridge.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=90741

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Zefan Li <lize...@huawei.com>
---
 drivers/gpu/drm/radeon/evergreen.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/radeon/evergreen.c 
b/drivers/gpu/drm/radeon/evergreen.c
index 01434ef..c5fe79e 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3474,6 +3474,9 @@ int evergreen_init(struct radeon_device *rdev)
                }
        }
 
+       /* posting read */
+       RREG32(SRBM_STATUS);
+
        return 0;
 }
 
-- 
1.9.1

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