linux-kernel - Re: [PATCH V2 6/6] mmc: mmci: replace blksz_datactrlXX by get_datactrl

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Date:   Fri, 8 Mar 2019 09:44:40 +0100
From:   Ludovic BARRE <ludovic.barre@...com>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
CC:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <srinivas.kandagatla@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2 6/6] mmc: mmci: replace blksz_datactrlXX by
 get_datactrl_cfg callback

hi Russell, Ulf

On 3/7/19 5:46 PM, Russell King - ARM Linux admin wrote:
> On Thu, Mar 07, 2019 at 05:39:02PM +0100, Ludovic Barre wrote:
>> -	if (data->flags & MMC_DATA_READ)
>> -		datactrl |= MCI_DPSM_DIRECTION;
> 
> Given that this is currently an invariant between all, it doesn't make
> sense to have a separate public function and combine it into the
> get_datactrl_cfg() implementations.  You may as well leave it in place
> here, after you call get_datactrl_cfg().
> 
>> +	datactrl = host->ops->get_datactrl_cfg(host);
> 
> Otherwise, I don't see a problem with this, although it would be nice to
> avoid the overhead of so many public functions, which could be done by
> adding them as inline functions in mmci.h
> 

To combine your comments (above and https://lkml.org/lkml/2019/3/6/318).
I could regroup mmci_dctrl_dir & mmci_dctrl_ddr & mmci_dctrl_sdio in a
common function mmci_dctrl_common and call by:
-Each get_datactrl_cfg variant
-Or in mmci_start_data

What do you prefer ?

Regards,
Ludo