Recent changes to locking have rendered struct_mutex_task
unused.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_drv.h | 6 ------
drivers/gpu/drm/msm/msm_gem_submit.c | 2 --
2 files changed, 8 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 9853e3e..c46dc12 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -154,12 +154,6 @@ struct msm_drm_private {
struct shrinker shrinker;
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 {
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index 9e087cf..d68bfa6 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -449,7 +449,6 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
goto out_unlock;
}
}
- priv->struct_mutex_task = current;
submit = submit_create(dev, gpu, queue, args->nr_bos, args->nr_cmds);
if (!submit) {
@@ -569,7 +568,6 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
out_unlock:
if (ret && (out_fence_fd >= 0))
put_unused_fd(out_fence_fd);
- priv->struct_mutex_task = NULL;
mutex_unlock(&dev->struct_mutex);
return ret;
}
--
1.9.1
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