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>

diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index a769c29..ca03716 100644 (file)
--- 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",