[PATCH] radeon: Only create additional ring debugfs files on Cayman or newer.

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

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 at amd.com>
---
 drivers/gpu/drm/radeon/radeon_ring.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index 4656812..88546d7 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -507,8 +507,11 @@ 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
-- 
1.7.9.1