Re: [PATCH 1/2] omap: hsmmc: Normalize dma cleanup operations

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On Tue, Sep 13, 2011 at 1:26 AM, Per Forlin <per.forlin@xxxxxxxxxx> wrote:
> On 1 September 2011 21:05, Venkatraman S <svenkatr@xxxxxx> wrote:
>> Reuse omap_hsmmc_dma_cleanup even for normal dma teardown in
>> omap_hsmmc_dma_cb. Consolidate multiple points of dma unmap into a
>> single location in post_req function, to prevent double unmapping.
> It's optional to use pre_req() and post_req(). The SDIO framework
> doesn't utilise these hooks. For instance this wont work together with
> SDIO-wlan on the pandaboard.
> If pre_req() has been issued it's fine to defer dma_unmap() until
> post_req(). If pre_req() is not called the driver should call
> dma_unmap() directly.
>

In that case, can the actual 'request' function just call pre_req and post_req
(at the beginning and at the end), if host_cookie is not set ?
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