From: Rob Clark <robdclark@chromium.org>
Date: Wed, 24 Nov 2021 21:41:30 +0000 (-0800)
Subject: drm/msm/gpu: Add some WARN_ON()s
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=eaa55ead5a41ab5fb3ef0561935ffe04453b56a7;p=linux.git

drm/msm/gpu: Add some WARN_ON()s

We don't expect either of these conditions to ever be true, so let's get
shouty if they are.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20211124214151.1427022-6-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
---

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 7d1ff202e5d81..47cb40bdbd439 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -504,6 +504,9 @@ int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state)
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	int i, count = 0;
 
+	WARN_ON(gpu->needs_hw_init);
+	WARN_ON(!mutex_is_locked(&gpu->lock));
+
 	kref_init(&state->ref);
 
 	ktime_get_real_ts64(&state->time);