[PATCH] drm/msm/adreno: Check for zap node availability

[Rob Clark]

From: Rob Clark <robdcl...@chromium.org>

This should allow disabling the zap node via an overlay, for slbounce.

Suggested-by: Nikita Travkin <nik...@trvn.ru>
Signed-off-by: Rob Clark <robdcl...@chromium.org>
---
 drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c 
b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index d9ea15994ae9..a00241e3373b 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -46,7 +46,7 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const 
char *fwname,
        }
 
        np = of_get_child_by_name(dev->of_node, "zap-shader");
-       if (!np) {
+       if (!np || !of_device_is_available(np)) {
                zap_available = false;
                return -ENODEV;
        }
-- 
2.45.1