Staging: hv: remove unneeded OnClose callback

This callback only calls one function, so just call the function
instead, no need for indirection at all.

Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/NetVscApi.h

@@ -105,7 +105,6 @@ struct netvsc_driver {
 	void (*OnLinkStatusChanged)(struct hv_device *dev, u32 Status);
 
 	/* Specific to this driver */
-	int (*OnClose)(struct hv_device *dev);
 	int (*OnSend)(struct hv_device *dev, struct hv_netvsc_packet *packet);
 
 	void *Context;
@@ -119,5 +118,6 @@ struct netvsc_device_info {
 /* Interface */
 int NetVscInitialize(struct hv_driver *drv);
 int RndisFilterOnOpen(struct hv_device *Device);
+int RndisFilterOnClose(struct hv_device *Device);
 
 #endif /* _NETVSC_API_H_ */

drivers/staging/hv/RndisFilter.c

@@ -85,8 +85,6 @@ static int RndisFilterOnDeviceRemove(struct hv_device *Device);
 
 static void RndisFilterOnCleanup(struct hv_driver *Driver);
 
-static int RndisFilterOnClose(struct hv_device *Device);
-
 static int RndisFilterOnSend(struct hv_device *Device,
 			     struct hv_netvsc_packet *Packet);
 
@@ -652,7 +650,6 @@ int RndisFilterInit(struct netvsc_driver *Driver)
 	Driver->Base.OnDeviceRemove = RndisFilterOnDeviceRemove;
 	Driver->Base.OnCleanup = RndisFilterOnCleanup;
 	Driver->OnSend = RndisFilterOnSend;
-	Driver->OnClose = RndisFilterOnClose;
 	/* Driver->QueryLinkStatus = RndisFilterQueryDeviceLinkStatus; */
 	Driver->OnReceiveCallback = RndisFilterOnReceive;
 
@@ -900,7 +897,7 @@ int RndisFilterOnOpen(struct hv_device *Device)
 	return ret;
 }
 
-static int RndisFilterOnClose(struct hv_device *Device)
+int RndisFilterOnClose(struct hv_device *Device)
 {
 	int ret;
 	struct netvsc_device *netDevice = Device->Extension;

drivers/staging/hv/netvsc_drv.c

@@ -101,19 +101,14 @@ static int netvsc_open(struct net_device *net)
 static int netvsc_close(struct net_device *net)
 {
 	struct net_device_context *net_device_ctx = netdev_priv(net);
-	struct driver_context *driver_ctx =
-	    driver_to_driver_context(net_device_ctx->device_ctx->device.driver);
-	struct netvsc_driver_context *net_drv_ctx =
-		(struct netvsc_driver_context *)driver_ctx;
-	struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
 	struct hv_device *device_obj = &net_device_ctx->device_ctx->device_obj;
 	int ret;
 
 	DPRINT_ENTER(NETVSC_DRV);
 
 	netif_stop_queue(net);
 
-	ret = net_drv_obj->OnClose(device_obj);
+	ret = RndisFilterOnClose(device_obj);
 	if (ret != 0)
 		DPRINT_ERR(NETVSC_DRV, "unable to close device (ret %d).", ret);