drm/radeon/kms: fix rc410 suspend/resume.

This fixes suspend/resume on my rc410 motherboard, it restores
the memory controller setup before posting the GPU, since it seems
to need the MC_FB_LOCATION setup correctly.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index a769c296f6a6..ca037160a582 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -418,6 +418,8 @@ int rs400_resume(struct radeon_device *rdev)
         rs400_gart_disable(rdev);
         /* Resume clock before doing reset */
         r300_clock_startup(rdev);
+        /* setup MC before calling post tables */
+        rs400_mc_program(rdev);
         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
         if (radeon_gpu_reset(rdev)) {
                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",