3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deuc...@amd.com>

commit fa8d387dc3f62062a6b4afbbb2a3438094fd8584 upstream.

Fixes a segfault on asics without a blit callback.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=62239

Reviewed-by: Michel Dänzer <michel.daen...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
[bwh: Backported to 3.2: s/copy\.blit/copy_blit/]
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/gpu/drm/radeon/radeon_benchmark.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

--- a/drivers/gpu/drm/radeon/radeon_benchmark.c
+++ b/drivers/gpu/drm/radeon/radeon_benchmark.c
@@ -139,13 +139,15 @@ static void radeon_benchmark_move(struct
                                                     sdomain, ddomain, "dma");
        }
 
-       time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
-                                       RADEON_BENCHMARK_COPY_BLIT, n);
-       if (time < 0)
-               goto out_cleanup;
-       if (time > 0)
-               radeon_benchmark_log_results(n, size, time,
-                                            sdomain, ddomain, "blit");
+       if (rdev->asic->copy_blit) {
+               time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
+                                               RADEON_BENCHMARK_COPY_BLIT, n);
+               if (time < 0)
+                       goto out_cleanup;
+               if (time > 0)
+                       radeon_benchmark_log_results(n, size, time,
+                                                    sdomain, ddomain, "blit");
+       }
 
 out_cleanup:
        if (sobj) {


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