Staging: hv: remove TeardownGpadl from struct vmbus_channel_interface

No one calls it anymore, so remove it.

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

drivers/staging/hv/channel_interface.c

@@ -91,13 +91,6 @@ static int ivmbus_establish_gpadl(struct hv_device *device, void *buffer,
 					  gpadl_handle);
 }
 
-static int ivmbus_teardown_gpadl(struct hv_device *device,
-				      u32 gpadl_handle)
-{
-	return vmbus_teardown_gpadl(device->context, gpadl_handle);
-
-}
-
 /* vmbus interface function pointer table */
 const struct vmbus_channel_interface vmbus_ops = {
 	.Open = ivmbus_open,
@@ -108,5 +101,4 @@ const struct vmbus_channel_interface vmbus_ops = {
 	.RecvPacket = ivmbus_recvpacket,
 	.RecvPacketRaw	= ivmbus_recvpacket_raw,
 	.EstablishGpadl = ivmbus_establish_gpadl,
-	.TeardownGpadl = ivmbus_teardown_gpadl,
 };

drivers/staging/hv/vmbus_api.h

@@ -94,7 +94,6 @@ struct hv_device_info {
  * @RecvPacket:        Receive packet
  * @RecvPacketRaw:     Receive Raw packet
  * @EstablishGpadl:    Set up GPADL for ringbuffer
- * @TeardownGpadl:     Teardown GPADL for ringbuffer
  *
  * This structure contains function pointer to control vmbus channel
  * behavior. None of these functions is externally callable, but they
@@ -124,7 +123,6 @@ struct vmbus_channel_interface {
 			     u32 *BufferActualLen, u64 *RequestId);
 	int (*EstablishGpadl)(struct hv_device *dev, void *buf, u32 buflen,
 			      u32 *GpadlHandle);
-	int (*TeardownGpadl)(struct hv_device *device, u32 GpadlHandle);
 };
 
 extern const struct vmbus_channel_interface vmbus_ops;