In the case where preemption is not enabled, this patch simply skips
preemption related initialization in hardware init sequence.
Signed-off-by: Sharat Masetty <smase...@codeaurora.org>
---
drivers/gpu/drm/msm/adreno/a5xx_preempt.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
b/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
index 970c796..6a3c560 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
@@ -208,6 +208,13 @@ void a5xx_preempt_hw_init(struct msm_gpu *gpu)
struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu);
int i;
+ /* Always come up on rb 0 */
+ a5xx_gpu->cur_ring = gpu->rb[0];
+
+ /* No preemption if we only have one ring */
+ if (gpu->nr_rings == 1)
+ return;
+
for (i = 0; i < gpu->nr_rings; i++) {
a5xx_gpu->preempt[i]->wptr = 0;
a5xx_gpu->preempt[i]->rptr = 0;
@@ -220,9 +227,6 @@ void a5xx_preempt_hw_init(struct msm_gpu *gpu)
/* Reset the preemption state */
set_preempt_state(a5xx_gpu, PREEMPT_NONE);
-
- /* Always come up on rb 0 */
- a5xx_gpu->cur_ring = gpu->rb[0];
}
static int preempt_init_ring(struct a5xx_gpu *a5xx_gpu,
--
1.9.1
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