[PATCH 15/35] drm/vmgfx: use drm_modeset_lock_all

[Daniel Vetter <daniel.vetter@ffwll.ch>]

Ok, this one here is a bit more complicated, but for an RFC I've
figured I can be a bit sloppy. So just convert ever mutex_lock call,
including the interruptible one. Since other places (e.g. in the
execbuf ioctl) take the mode_config.mutex without bothering with
interruptible handling, I've figured I should be able to get away with
this in a few more places ...

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c |   18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index d9fbbe1..a135498 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -163,11 +163,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
 		goto out_no_copy;
 	}
 
-	ret = mutex_lock_interruptible(&dev->mode_config.mutex);
-	if (unlikely(ret != 0)) {
-		ret = -ERESTARTSYS;
-		goto out_no_mode_mutex;
-	}
+	drm_modeset_lock_all(dev);
 
 	obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB);
 	if (!obj) {
@@ -200,8 +196,7 @@ out_no_surface:
 	ttm_read_unlock(&vmaster->lock);
 out_no_ttm_lock:
 out_no_fb:
-	mutex_unlock(&dev->mode_config.mutex);
-out_no_mode_mutex:
+	drm_modeset_unlock_all(dev);
 out_no_copy:
 	kfree(clips);
 out_clips:
@@ -251,11 +246,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 		goto out_no_copy;
 	}
 
-	ret = mutex_lock_interruptible(&dev->mode_config.mutex);
-	if (unlikely(ret != 0)) {
-		ret = -ERESTARTSYS;
-		goto out_no_mode_mutex;
-	}
+	drm_modeset_lock_all(dev);
 
 	obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB);
 	if (!obj) {
@@ -282,8 +273,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 	ttm_read_unlock(&vmaster->lock);
 out_no_ttm_lock:
 out_no_fb:
-	mutex_unlock(&dev->mode_config.mutex);
-out_no_mode_mutex:
+	drm_modeset_unlock_all(dev);
 out_no_copy:
 	kfree(clips);
 out_clips:
-- 
1.7.10.4