[PATCH] drm/radeon/kms: r600 dump last 64 dwords of ring.

[Jerome Glisse]

Instead of dumping unprocessed dwords, dump the last 64
dwords of the ring. This make debugging of some case easier.

Signed-off-by: Jerome Glisse <jglisse at redhat.com>
---
 drivers/gpu/drm/radeon/r600.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index f68cc92..1537079 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3371,9 +3371,9 @@ static int r600_debugfs_cp_ring_info(struct seq_file *m, void *data)
 	seq_printf(m, "driver's copy of the CP_RB_RPTR 0x%08x\n", rdev->cp.rptr);
 	seq_printf(m, "%u free dwords in ring\n", rdev->cp.ring_free_dw);
 	seq_printf(m, "%u dwords in ring\n", count);
-	i = rdev->cp.rptr;
-	for (j = 0; j <= count; j++) {
-		seq_printf(m, "r[%04d]=0x%08x\n", i, rdev->cp.ring[i]);
+	i = (rdev->cp.wptr + (rdev->cp.ring_size / 4) - 64) & rdev->cp.ptr_mask;
+	for (j = 0; j <= 64; j++) {
+		seq_printf(m, "r[%04d]=0x%08X\n", i, rdev->cp.ring[i]);
 		i = (i + 1) & rdev->cp.ptr_mask;
 	}
 	return 0;
-- 
1.7.0.1