net: ipv4: tcp.c Fixed an assignment coding style issue

Fixed an assignment coding style issue
Signed-off-by: NYuvaraja Mariappan <ymariappan@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/tcp.c

@@ -900,7 +900,8 @@ static ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,
 	 */
 	if (((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)) &&
 	    !tcp_passive_fastopen(sk)) {
-		if ((err = sk_stream_wait_connect(sk, &timeo)) != 0)
+		err = sk_stream_wait_connect(sk, &timeo);
+		if (err != 0)
 			goto out_err;
 	}
 
@@ -967,7 +968,8 @@ static ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,
 
 		copied += copy;
 		offset += copy;
-		if (!(size -= copy)) {
+		size -= copy;
+		if (!size) {
 			tcp_tx_timestamp(sk, skb);
 			goto out;
 		}
@@ -988,7 +990,8 @@ static ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset,
 		tcp_push(sk, flags & ~MSG_MORE, mss_now,
 			 TCP_NAGLE_PUSH, size_goal);
 
-		if ((err = sk_stream_wait_memory(sk, &timeo)) != 0)
+		err = sk_stream_wait_memory(sk, &timeo);
+		if (err != 0)
 			goto do_error;
 
 		mss_now = tcp_send_mss(sk, &size_goal, flags);
@@ -1111,7 +1114,8 @@ int tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 	 */
 	if (((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)) &&
 	    !tcp_passive_fastopen(sk)) {
-		if ((err = sk_stream_wait_connect(sk, &timeo)) != 0)
+		err = sk_stream_wait_connect(sk, &timeo);
+		if (err != 0)
 			goto do_error;
 	}
 
@@ -1267,7 +1271,8 @@ int tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 			tcp_push(sk, flags & ~MSG_MORE, mss_now,
 				 TCP_NAGLE_PUSH, size_goal);
 
-		if ((err = sk_stream_wait_memory(sk, &timeo)) != 0)
+		err = sk_stream_wait_memory(sk, &timeo);
+		if (err != 0)
 			goto do_error;
 
 		mss_now = tcp_send_mss(sk, &size_goal, flags);
@@ -1767,7 +1772,8 @@ int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock,
 
 			/* __ Restore normal policy in scheduler __ */
 
-			if ((chunk = len - tp->ucopy.len) != 0) {
+			chunk = len - tp->ucopy.len;
+			if (chunk != 0) {
 				NET_ADD_STATS_USER(sock_net(sk), LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG, chunk);
 				len -= chunk;
 				copied += chunk;
@@ -1778,7 +1784,8 @@ int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock,
 do_prequeue:
 				tcp_prequeue_process(sk);
 
-				if ((chunk = len - tp->ucopy.len) != 0) {
+				chunk = len - tp->ucopy.len;
+				if (chunk != 0) {
 					NET_ADD_STATS_USER(sock_net(sk), LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE, chunk);
 					len -= chunk;
 					copied += chunk;
@@ -2230,7 +2237,8 @@ int tcp_disconnect(struct sock *sk, int flags)
 	sk->sk_shutdown = 0;
 	sock_reset_flag(sk, SOCK_DONE);
 	tp->srtt_us = 0;
-	if ((tp->write_seq += tp->max_window + 2) == 0)
+	tp->write_seq += tp->max_window + 2;
+	if (tp->write_seq == 0)
 		tp->write_seq = 1;
 	icsk->icsk_backoff = 0;
 	tp->snd_cwnd = 2;