linux-kernel - Re: [PATCH] rxrpc: remove redundant initialization of variable 'len'

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Message-Id: <20180316.094928.699803274284942791.davem@davemloft.net>
Date:   Fri, 16 Mar 2018 09:49:28 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     colin.king@...onical.com
Cc:     dhowells@...hat.com, linux-afs@...ts.infradead.org,
        netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rxrpc: remove redundant initialization of variable
 'len'

From: Colin King <colin.king@...onical.com>
Date: Mon, 12 Mar 2018 17:25:38 +0000

> From: Colin Ian King <colin.king@...onical.com>
> 
> The variable 'len' is being initialized with a value that is never
> read and it is re-assigned later, hence the initialization is redundant
> and can be removed.
> 
> Cleans up clang warning:
> net/rxrpc/recvmsg.c:275:15: warning: Value stored to 'len' during its
> initialization is never read
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Hehe, if the diff provided just 2 more lines of context at the bottom
we'd be able to see the overriding assignment :-)

> @@ -272,7 +272,7 @@ static int rxrpc_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
>  			     unsigned int *_offset, unsigned int *_len)
>  {
>  	unsigned int offset = sizeof(struct rxrpc_wire_header);
> -	unsigned int len = *_len;
> +	unsigned int len;
>  	int ret;
>  	u8 annotation = *_annotation;
>  
> -- 
> 2.15.1
> 

Applied, thanks Colin.