freedreno/kgsl: fix crash introduced w/ bo-cache

Signed-off-by: Rob Clark <robclark@freedesktop.org>

diff --git a/freedreno/kgsl/kgsl_bo.c b/freedreno/kgsl/kgsl_bo.c
index 585851c..76d1f27 100644 (file)
--- a/freedreno/kgsl/kgsl_bo.c
+++ b/freedreno/kgsl/kgsl_bo.c
@@ -85,6 +85,13 @@ static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
                uint32_t current;
                int ret;
 
+               /* special case for is_idle().. we can't really handle that
+                * properly in kgsl (perhaps we need a way to just disable
+                * the bo-cache for kgsl?)
+                */
+               if (!pipe)
+                       return -EBUSY;
+
                ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), &current);
                if (ret)
                        return ret;