github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-29 17:43:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/msm/adreno: Prevent unclocked access when retrieving timestamps

Browse Source 
msm_gpu's get_timestamp() op (called by the MSM_GET_PARAM ioctl) can
result in register accesses. We need our power domain and clocks to
be active for that. Make sure they are enabled here.

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Archit Taneja 2017-07-28 16:17:08 +05:30 committed by Rob Clark
parent cdbc78ba70
commit 541de4c9c9
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/msm/adreno/adreno_gpu.c
View File

@ -48,8 +48,15 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
*value = adreno_gpu->base.fast_rate;
return 0;
case MSM_PARAM_TIMESTAMP:
if (adreno_gpu->funcs->get_timestamp)
return adreno_gpu->funcs->get_timestamp(gpu, value);
if (adreno_gpu->funcs->get_timestamp) {
int ret;
pm_runtime_get_sync(&gpu->pdev->dev);
ret = adreno_gpu->funcs->get_timestamp(gpu, value);
pm_runtime_put_autosuspend(&gpu->pdev->dev);
return ret;
}
return -EINVAL;
default:
DBG("%s: invalid param: %u", gpu->name, param);