macvtap: remove unused parameter in macvtap_do_read()

Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index f599c47..4c6f84c 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -819,7 +819,7 @@
 	return ret ? ret : copied;
 }
 
-static ssize_t macvtap_do_read(struct macvtap_queue *q, struct kiocb *iocb,
+static ssize_t macvtap_do_read(struct macvtap_queue *q,
 			       const struct iovec *iv, unsigned long len,
 			       int noblock)
 {
@@ -870,7 +870,7 @@
 		goto out;
 	}
 
-	ret = macvtap_do_read(q, iocb, iv, len, file->f_flags & O_NONBLOCK);
+	ret = macvtap_do_read(q, iv, len, file->f_flags & O_NONBLOCK);
 	ret = min_t(ssize_t, ret, len); /* XXX copied from tun.c. Why? */
 out:
 	return ret;
@@ -1102,7 +1102,7 @@
 	int ret;
 	if (flags & ~(MSG_DONTWAIT|MSG_TRUNC))
 		return -EINVAL;
-	ret = macvtap_do_read(q, iocb, m->msg_iov, total_len,
+	ret = macvtap_do_read(q, m->msg_iov, total_len,
 			  flags & MSG_DONTWAIT);
 	if (ret > total_len) {
 		m->msg_flags |= MSG_TRUNC;