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drm/msm: Removed unused struct_mutex_task 

Recent changes to locking have rendered struct_mutex_task
unused.

Unused since 0e08270a1f.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Jordan Crouse 2017-10-20 11:07:02 -06:00 committed by Rob Clark
parent b1fc2839d2
commit 3ceaa1411d
2 changed files with 0 additions and 8 deletions
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6
drivers/gpu/drm/msm/msm_drv.h
View File

@ -154,12 +154,6 @@ struct msm_drm_private {
struct shrinker shrinker; struct shrinker shrinker;
struct msm_vblank_ctrl vblank_ctrl; struct msm_vblank_ctrl vblank_ctrl;
/* task holding struct_mutex.. currently only used in submit path
* to detect and reject faults from copy_from_user() for submit
* ioctl.
*/
struct task_struct *struct_mutex_task;
}; };
struct msm_format { struct msm_format {

2
drivers/gpu/drm/msm/msm_gem_submit.c
View File

@ -463,7 +463,6 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
goto out_unlock; goto out_unlock;
} }
} }
priv->struct_mutex_task = current;
submit = submit_create(dev, gpu, queue, args->nr_bos, args->nr_cmds); submit = submit_create(dev, gpu, queue, args->nr_bos, args->nr_cmds);
if (!submit) { if (!submit) {
@ -581,7 +580,6 @@ out:
out_unlock: out_unlock:
if (ret && (out_fence_fd >= 0)) if (ret && (out_fence_fd >= 0))
put_unused_fd(out_fence_fd); put_unused_fd(out_fence_fd);
priv->struct_mutex_task = NULL;
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
return ret; return ret;
} }