linux-kernel - Re: [PATCH 5/5] crypto: Add LZO compression support to the crypto interface

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Message-ID: <a781481a0705040109r45cbf472i4094dd2ebf7841e8@mail.gmail.com>
Date:	Fri, 4 May 2007 13:39:20 +0530
From:	"Satyam Sharma" <satyam.sharma@...il.com>
To:	"Richard Purdie" <rpurdie@...nedhand.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	"David Woodhouse" <dwmw2@...radead.org>,
	herbert@...dor.apana.org.au,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	linux-crypto@...r.kernel.org
Subject: Re: [PATCH 5/5] crypto: Add LZO compression support to the crypto interface

On 5/1/07, Richard Purdie <rpurdie@...nedhand.com> wrote:
> +static int lzo_init(struct crypto_tfm *tfm)
> +{
> +       struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
> +
> +       ctx->lzo_mem = vmalloc(LZO1X_MEM_COMPRESS);
> +
> +       if (!ctx->lzo_mem) {
> +               vfree(ctx->lzo_mem);

Heh. What's (why's) this? You _can_ {k, v}free NULL but doing so after
explicitly checking for it is ... ... insane!

> +               return -ENOMEM;

Yeah. Just return -ENOMEM; and be done with it.
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