drm/radeon/kms: Use radeon_agp_disable when disabling AGP

Use same common function to disable agp so we replace the GART
callback by the proper one when we do so. This fix oops if
radeon_agp_init report failure.

This patch also move radeon_agp_init out of *_mc_init for r600
& rv770 so that we can have a similar behavior than for previous
hw, ie if agp_init fails it will fallback to GPU GART and disable
AGP.

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

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
index 053404e71a9d..4526faaacca8 100644
--- a/drivers/gpu/drm/radeon/r420.c
+++ b/drivers/gpu/drm/radeon/r420.c
@@ -50,9 +50,7 @@ int r420_mc_init(struct radeon_device *rdev)
         if (rdev->flags & RADEON_IS_AGP) {
                 r = radeon_agp_init(rdev);
                 if (r) {
-                        printk(KERN_WARNING "[drm] Disabling AGP\n");
-                        rdev->flags &= ~RADEON_IS_AGP;
-                        rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
+                        radeon_agp_disable(rdev);
                 } else {
                         rdev->mc.gtt_location = rdev->mc.agp_base;
                 }