linux-kernel - Re: [PATCH v2 1/6] net-PPP: Replacement of a printk() call by pr_warn() in mppe

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Date:	Thu, 04 Dec 2014 14:23:29 -0800
From:	Joe Perches <joe@...ches.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Paul Mackerras <paulus@...ba.org>, linux-ppp@...r.kernel.org,
	netdev@...r.kernel.org, Eric Dumazet <eric.dumazet@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH v2 1/6] net-PPP: Replacement of a printk() call by
 pr_warn() in mppe_rekey()

On Thu, 2014-12-04 at 23:10 +0100, SF Markus Elfring wrote:
> The mppe_rekey() function contained a few update candidates.
> * Curly brackets were still used around a single function call "printk".
> * Unwanted space characters
> 
> Let us improve these implementation details according to the current Linux
> coding style convention.

trivia:

> diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c
[]
> @@ -172,9 +172,8 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
>  		setup_sg(sg_in, state->sha1_digest, state->keylen);
>  		setup_sg(sg_out, state->session_key, state->keylen);
>  		if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in,
> -					     state->keylen) != 0) {
> -    		    printk(KERN_WARNING "mppe_rekey: cipher_encrypt failed\n");
> -		}
> +					     state->keylen) != 0)
> +			pr_warn("mppe_rekey: cipher_encrypt failed\n");

It's generally nicer to replace embedded function names
with "%s: ", __func__

			pr_warn("%s: cipher_encrypt failed\n", __func__);


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