[PATCH 2/5] drm/vmgfx: kill off unused init_mutex

[Emil Velikov]

From: Emil Velikov <emil.velikov at collabora.com>

According to the docs - prevents firstopen/lastclose races. Yet never
used in practise.

Cc: "VMware Graphics" <linux-graphics-maintainer at vmware.com>
Cc: Thomas Hellstrom <thellstrom at vmware.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 1 -
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 5 -----
 2 files changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index a38f06909fb6..d3f108f7e52d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -664,7 +664,6 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 		INIT_LIST_HEAD(&dev_priv->res_lru[i]);
 	}
 
-	mutex_init(&dev_priv->init_mutex);
 	init_waitqueue_head(&dev_priv->fence_queue);
 	init_waitqueue_head(&dev_priv->fifo_queue);
 	dev_priv->fence_queue_waiters = 0;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 96983c47fb40..9be2176cc260 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -484,11 +484,6 @@ struct vmw_private {
 
 	spinlock_t resource_lock;
 	struct idr res_idr[vmw_res_max];
-	/*
-	 * Block lastclose from racing with firstopen.
-	 */
-
-	struct mutex init_mutex;
 
 	/*
 	 * A resource manager for kernel-only surfaces and
-- 
2.21.0