4.2.8-ckt8 -stable review patch.  If anyone has any objections, please let me 
know.

---8<------------------------------------------------------------

From: Alex Deucher <[email protected]>

commit 0e5585dc870af947fab2af96a88c2d8b4270247c upstream.

Higher mclk values are not stable due to a bug somewhere.
Limit them for now.

Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
---
 drivers/gpu/drm/radeon/si_dpm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 444935d..7285adb 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3010,6 +3010,10 @@ static void si_apply_state_adjust_rules(struct 
radeon_device *rdev,
                }
                ++p;
        }
+       /* limit mclk on all R7 370 parts for stability */
+       if (rdev->pdev->device == 0x6811 &&
+           rdev->pdev->revision == 0x81)
+               max_mclk = 120000;
 
        if (rps->vce_active) {
                rps->evclk = 
rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].evclk;
-- 
2.7.4

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