netdev - Re: [PATCH] mac80211: LLVMLinux: Remove VLAIS usage from mac80211

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Message-ID: <1394177091.4653.1.camel@jlt4.sipsolutions.net>
Date:	Fri, 07 Mar 2014 08:24:51 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	behanw@...verseincode.com
Cc:	linville@...driver.com, davem@...emloft.net,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	dwmw2@...radead.org, pageexec@...email.hu,
	Jan-Simon Möller <dl9pf@....de>,
	Vinícius Tinti <viniciustinti@...il.com>,
	Mark Charlebois <charlebm@...il.com>
Subject: Re: [PATCH] mac80211: LLVMLinux: Remove VLAIS usage from mac80211

On Thu, 2014-03-06 at 11:52 -0800, behanw@...verseincode.com wrote:
> From: Jan-Simon Möller <dl9pf@....de>
> 
> Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99
> compliant equivalent.

Fine, but

> +	char aead_req_data[sizeof(struct aead_request)
> +				+ crypto_aead_reqsize(tfm)
> +				+ CRYPTO_MINALIGN] CRYPTO_MINALIGN_ATTR;

You really should be using kernel coding style, which changes
indentation and has the + on the previous line.

> +	struct aead_request *aead_req
> +		= (struct aead_request *) aead_req_data;

(void *) is perfectly find and it'll probably fit on one line then.

> +	memset(&aead_req_data, 0, (sizeof(struct aead_request)+
> +		crypto_aead_reqsize(tfm) + CRYPTO_MINALIGN));

You don't need the size calculation again, you can use
sizeof(aead_req_data)

johannes

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