linux-kernel - Re: [GIT PULL] MMC fixes for v5.13-rc8

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Message-ID: <CAPDyKFrLSMpPJOgd5e4B1x3Vwfg4q23zgy4ESc8EmFL2MnyK7g@mail.gmail.com>
Date:   Mon, 28 Jun 2021 09:49:07 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Neil Armstrong <narmstrong@...libre.com>
Cc:     linux-mmc <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Robin Murphy <robin.murphy@....com>
Subject: Re: [GIT PULL] MMC fixes for v5.13-rc8

+ Neil, Robin

On Thu, 24 Jun 2021 at 20:00, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> On Thu, Jun 24, 2021 at 5:32 AM Ulf Hansson <ulf.hansson@...aro.org> wrote:
> >
> > Neil Armstrong (1):
> >       mmc: meson-gx: use memcpy_to/fromio for dram-access-quirk
>
> Ugh. How horribly ugly.
>
> Why is that 'host->dram_access_quirk' test _inside_ the loop, rather
> than be something like
>
>         if (host->dram_access_quirk)
>                 return sg_copy_to_buffer(data->sg, data->sg_len,
>                                 host->bounce_buf, xfer_bytes);
>
> at the top of the function, with meson_mmc_copy_buffer() then only
> handling the mmio case?
>
> No, I don't know this code, I'm just looking at the patch and going
> "that looks really ugly".
>
> Anyway, I've pulled it, but I thought I'd voice my reaction to it..

Thanks, good point!

Robin and Neil did discuss some cleanup that could be made on top [1],
but it looks like that was targeting a different part.

In any case, Neil, would you mind sending a cleanup according to the
comment from Linus?

Kind regards
Uffe

[1]
https://www.spinics.net/lists/arm-kernel/msg901045.html