drm/radeon/kms: don't fail if we fail to init GPU acceleration

Userspace can query if acceleration is working or not true get
info ioctl and could fallback to software if for some reason
kernel failed to initialize KMS. This should allow to give a
working KMS setup in all case (even with non functionning accel).

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

1 files changed, 18 insertions, 15 deletions

diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 4f2098bc7974..be2f86539ebc 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -953,6 +953,7 @@ int rv770_init(struct radeon_device *rdev)
         if (r)
                 return r;
 
+        rdev->accel_working = true;
         r = rv770_resume(rdev);
         if (r) {
                 if (rdev->flags & RADEON_IS_AGP) {
@@ -961,22 +962,24 @@ int rv770_init(struct radeon_device *rdev)
                         rdev->flags &= ~RADEON_IS_AGP;
                         return rv770_init(rdev);
                 }
-                return r;
-        }
-        r = r600_blit_init(rdev);
-        if (r) {
-                DRM_ERROR("radeon: failled blitter (%d).\n", r);
-                return r;
+                rdev->accel_working = false;
         }
-        r = radeon_ib_pool_init(rdev);
-        if (r) {
-                DRM_ERROR("radeon: failled initializing IB pool (%d).\n", r);
-                return r;
-        }
-        r = radeon_ib_test(rdev);
-        if (r) {
-                DRM_ERROR("radeon: failled testing IB (%d).\n", r);
-                        return r;
+        if (rdev->accel_working) {
+                r = r600_blit_init(rdev);
+                if (r) {
+                        DRM_ERROR("radeon: failled blitter (%d).\n", r);
+                        rdev->accel_working = false;
+                }
+                r = radeon_ib_pool_init(rdev);
+                if (r) {
+                        DRM_ERROR("radeon: failled initializing IB pool (%d).\n", r);
+                        rdev->accel_working = false;
+                }
+                r = radeon_ib_test(rdev);
+                if (r) {
+                        DRM_ERROR("radeon: failled testing IB (%d).\n", r);
+                        rdev->accel_working = false;
+                }
         }
         return 0;
 }