drm/radeon: Only create additional ring debugfs files on Cayman or newer.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=46274

Tested with a Cayman card in a Llano system: The additional files are created
and working for the Cayman card but not created for the CPU's built-in GPU.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index 30a4c50..92c9ea4 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -500,8 +500,11 @@ static char radeon_debugfs_ib_names[RADEON_IB_POOL_SIZE][32];
 int radeon_debugfs_ring_init(struct radeon_device *rdev)
 {
 #if defined(CONFIG_DEBUG_FS)
-       return radeon_debugfs_add_files(rdev, radeon_debugfs_ring_info_list,
-                                       ARRAY_SIZE(radeon_debugfs_ring_info_list));
+       if (rdev->family >= CHIP_CAYMAN)
+               return radeon_debugfs_add_files(rdev, radeon_debugfs_ring_info_list,
+                                               ARRAY_SIZE(radeon_debugfs_ring_info_list));
+       else
+               return radeon_debugfs_add_files(rdev, radeon_debugfs_ring_info_list, 1);
 #else
        return 0;
 #endif