Re: [PATCH 2/3] crypto: caam_rng: fix rng_unmap_ctx's DMA_UNMAP size problem

From: yjin
Date: Wed Mar 04 2015 - 00:33:34 EST



On 2015å03æ04æ 03:31, Kim Phillips wrote:
On Tue, 3 Mar 2015 14:50:52 +0800
<yanjiang.jin@xxxxxxxxxxxxx> 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).

Hi Kim,

I can't find the obvious limitation for the RNG descriptor length in Freescale documents, could you point out it?

Thanks!
Yanjiang

Kim



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