| From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 | 
 | From: Antonio Quartulli <a@unstable.cc> | 
 | Date: Mon, 22 Feb 2021 17:25:43 +0100 | 
 | Subject: [PATCH] wireguard: avoid double unlikely() notation when using | 
 |  IS_ERR() | 
 |  | 
 | commit 30ac4e2f54ec067b7b9ca0db27e75681581378d6 upstream. | 
 |  | 
 | The definition of IS_ERR() already applies the unlikely() notation | 
 | when checking the error status of the passed pointer. For this | 
 | reason there is no need to have the same notation outside of | 
 | IS_ERR() itself. | 
 |  | 
 | Clean up code by removing redundant notation. | 
 |  | 
 | Signed-off-by: Antonio Quartulli <a@unstable.cc> | 
 | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> | 
 | Signed-off-by: Jakub Kicinski <kuba@kernel.org> | 
 | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> | 
 | --- | 
 |  drivers/net/wireguard/device.c | 2 +- | 
 |  drivers/net/wireguard/socket.c | 4 ++-- | 
 |  2 files changed, 3 insertions(+), 3 deletions(-) | 
 |  | 
 | --- a/drivers/net/wireguard/device.c | 
 | +++ b/drivers/net/wireguard/device.c | 
 | @@ -157,7 +157,7 @@ static netdev_tx_t wg_xmit(struct sk_buf | 
 |  	} else { | 
 |  		struct sk_buff *segs = skb_gso_segment(skb, 0); | 
 |   | 
 | -		if (unlikely(IS_ERR(segs))) { | 
 | +		if (IS_ERR(segs)) { | 
 |  			ret = PTR_ERR(segs); | 
 |  			goto err_peer; | 
 |  		} | 
 | --- a/drivers/net/wireguard/socket.c | 
 | +++ b/drivers/net/wireguard/socket.c | 
 | @@ -71,7 +71,7 @@ static int send4(struct wg_device *wg, s | 
 |  				ip_rt_put(rt); | 
 |  			rt = ip_route_output_flow(sock_net(sock), &fl, sock); | 
 |  		} | 
 | -		if (unlikely(IS_ERR(rt))) { | 
 | +		if (IS_ERR(rt)) { | 
 |  			ret = PTR_ERR(rt); | 
 |  			net_dbg_ratelimited("%s: No route to %pISpfsc, error %d\n", | 
 |  					    wg->dev->name, &endpoint->addr, ret); | 
 | @@ -138,7 +138,7 @@ static int send6(struct wg_device *wg, s | 
 |  		} | 
 |  		dst = ipv6_stub->ipv6_dst_lookup_flow(sock_net(sock), sock, &fl, | 
 |  						      NULL); | 
 | -		if (unlikely(IS_ERR(dst))) { | 
 | +		if (IS_ERR(dst)) { | 
 |  			ret = PTR_ERR(dst); | 
 |  			net_dbg_ratelimited("%s: No route to %pISpfsc, error %d\n", | 
 |  					    wg->dev->name, &endpoint->addr, ret); |