linux-kernel - Re: [PATCH 2/3] crypto: caam_rng: fix rng_unmap_ctx's DMA

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Message-ID: <20150303133120.6706da49d0f7188a8213fe36@freescale.com>
Date:	Tue, 3 Mar 2015 13:31:20 -0600
From:	Kim Phillips <kim.phillips@...escale.com>
To:	<yanjiang.jin@...driver.com>
CC:	<horia.geanta@...escale.com>, <herbert@...dor.apana.org.au>,
	<davem@...emloft.net>, <ruchika.gupta@...escale.com>,
	<cristian.stoica@...escale.com>, <NiteshNarayanLal@...escale.com>,
	<linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<jinyanjiang@...il.com>
Subject: Re: [PATCH 2/3] crypto: caam_rng: fix rng_unmap_ctx's DMA_UNMAP
 size problem

On Tue, 3 Mar 2015 14:50:52 +0800
<yanjiang.jin@...driver.com> wrote:

> -		dma_unmap_single(jrdev, ctx->sh_desc_dma, DESC_RNG_LEN,
> -				 DMA_TO_DEVICE);
> +		dma_unmap_single(jrdev, ctx->sh_desc_dma,
> +				desc_bytes(ctx->sh_desc), DMA_TO_DEVICE);

alignment: the 'd' in desc_bytes should fall directly under the 'j'
in jrdev.

Also, DESC_RNG_LEN should be corrected to (4 * CAAM_CMD_SZ).

Kim
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