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Subject: Re: [PATCH v3 3/5] brcmfmac: sdio: Disable auto-tuning around
 commands expected to fail
To:     Ulf Hansson <ulf.hansson@linaro.org>,
        Doug Anderson <dianders@chromium.org>
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        Kalle Valo <kvalo@codeaurora.org>,
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        Madhan Mohan R <madhanmohan.r@cypress.com>,
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        Hante Meuleman <hante.meuleman@broadcom.com>,
        YueHaibing <yuehaibing@huawei.com>,
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From:   Arend Van Spriel <arend.vanspriel@broadcom.com>
Message-ID: <c7c6d3f4-ebb1-8964-0616-973fae1ab47d@broadcom.com>
Date:   Wed, 12 Jun 2019 13:11:46 +0200
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On 6/12/2019 12:10 PM, Ulf Hansson wrote:
>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c:
>>    mmc_set_data_timeout(md, func->card);
>>    mmc_wait_for_req(func->card->host, mr);
> These are not okay, none of these things calls should really be done
> from an SDIO func driver.
> 
> It tells me that the func driver is a doing workaround for something
> that should be managed in a common way.

We are using some low-level functions passing chain of skbuff to the 
device using CMD53 with scatterlist. If I recall correctly Marvell made 
an attempt to have a similar function for it in the mmc stack. Not sure 
if that ever made it in. If so I can rework our driver using that API. 
If not, I can make a new attempt.

Regards,
Arend