linux-kernel - Re: [PATCH 21/39] mtd: nand: denali: support 64bit capable DMA engine

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Message-ID: <CAK7LNAR7FAH2i7i0iJGCXbrDgpD==b3Rcj6wRjaKuQ+voWTFLg@mail.gmail.com>
Date:   Wed, 30 Nov 2016 16:11:53 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:     linux-mtd@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Cyrille Pitchen <cyrille.pitchen@...el.com>
Subject: Re: [PATCH 21/39] mtd: nand: denali: support 64bit capable DMA engine

Hi Boris,

2016-11-28 1:16 GMT+09:00 Boris Brezillon <boris.brezillon@...e-electrons.com>:
>
> If you follow my suggestions of definition function pointers, you'll
> just have to add a function pointer to the denali_caps struct:
>
>         void (*setup_dma)(struct denali_nand_info *denali, int op);
>


This is possible because both 32B and 64B variants have
the same function prototype.


However, I am not keen on doing so for ecc_handle(),
so, at this moment, I am not keen on doing so only for setup_dma() either.

If I see more cases that fit in callback handler approach,
I will think about switching to it with consistency.

-- 
Best Regards
Masahiro Yamada