etnaviv supports the following pipe types:
ETNA_PIPE_3D 0x00
ETNA_PIPE_2D 0x01
ETNA_PIPE_VG 0x02
The current used value of 4 for ETNA_MAX_PIPES is wrong and
caueses some troubles in the combination with perf counters.
Lets have a look at the function etnaviv_pm_query_dom(..):
If domain->pipe is 3 then we are one element beyond the end
of the array.
The easiest way to fix this issue is to provide a correct value
for ETNA_MAX_PIPES.
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Fixes: a8c21a5451d8 ("drm/etnaviv: add initial etnaviv DRM driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
---
include/uapi/drm/etnaviv_drm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/drm/etnaviv_drm.h b/include/uapi/drm/etnaviv_drm.h
index 09d0df8b71c5..5a62228298d1 100644
--- a/include/uapi/drm/etnaviv_drm.h
+++ b/include/uapi/drm/etnaviv_drm.h
@@ -75,7 +75,7 @@ struct drm_etnaviv_timespec {
#define ETNAVIV_PARAM_GPU_NUM_VARYINGS 0x1a
#define ETNAVIV_PARAM_SOFTPIN_START_ADDR 0x1b
-#define ETNA_MAX_PIPES 4
+#define ETNA_MAX_PIPES 3
struct drm_etnaviv_param {
__u32 pipe; /* in */
--
2.23.0
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