drm/vmwgfx: use drm_modeset_lock_all

Ok, this one here is a bit more complicated, and I can't really claim
to fully understand the locking and lifetime rules of the vmwgfx
driver. 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>

1 files changed, 4 insertions, 14 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index d9fbbe191071..a135498a1298 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: