linux-kernel - Re: [PATCH] mmc: Add hardware dependencies for sdhci-pxav3 and sdhci-pxav2

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Message-ID: <20150130092913.6256e517@endymion.delvare>
Date:	Fri, 30 Jan 2015 09:29:13 +0100
From:	Jean Delvare <jdelvare@...e.de>
To:	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	Chris Ball <chris@...ntf.net>,
	linux-mmc <linux-mmc@...r.kernel.org>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mmc: Add hardware dependencies for sdhci-pxav3 and
 sdhci-pxav2

Hi Ulf,

On Thu, 29 Jan 2015 16:01:48 +0100, Ulf Hansson wrote:
> On 29 January 2015 at 15:17, Jean Delvare <jdelvare@...e.de> wrote:
> > On Wed, 28 Jan 2015 15:04:24 +0100, Ulf Hansson wrote:
> >> For those SOC that want these drivers, they should be able to select
> >> them from their defconfigs. So it will be an opt-in instead of opt-out
> >> policy, which I prefer. It also follows the other Kconfig options for
> >> mmc drivers.
> >
> > As you wish. But that change would be a separate patch going on top of
> > mine, right? I'm not sure I understand what you expect from me at this
> > point, please clarify.
> 
> Sorry for being unclear. I don't like $subject patch.
> 
> Send a new one, removing the following lines:
> default CPU_MMP2
> default CPU_PXA910
> 
> Then you send another patch(es) to the respective SOC maintainer,
> updating the defonfig(s) selecting MMC_SDHCI_PXAV3|PXAV2, when
> appropriate.
> 
> Would that work?

Not really, I'm afraid.

My proposed change affects users of non-embedded systems, or more
generally everyone not on ARCH_MMP. I want to make their life easier by
hiding options which are not relevant to them. I have sent several
dozen of such patches in the past for various drivers, see for example
the latest ones:
  http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=441fb7684782be3553c67dc04defcf304b999bba
  http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c03842d89b769db44be5cb0b1ebb384ccfa25f7f
  http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84c3a8f6eadb2bedfba10f62da0328d8533c8f25
Also note that the MMC subsystem already has examples of this, check
MMC_OMAP_HS, MMC_SDHCI_MSM, MMC_SDHI, MMC_DW and MMC_SH_MMCIF in
drivers/mmc/host/Kconfig. I'm just doing more of the same, nothing new.

The change you want, OTOH, would affect exclusively the ARCH_MMP users
(of which I am not.) It is essentially unrelated with what I was
originally talking about, except for the fact that it touches the same
Kconfig entries. I have no idea if your proposal is a good idea, I am
not dealing with embedded systems, and I have no idea who are the
maintainers of the affected SOCs. This is simply not my area.

So basically you are rejecting my proposal without a reason, and then
you ask me to do an unrelated work instead. This is not fair, sorry.

Don't get me wrong, I'm always ready to do some more work than I
originally intended if that's what it takes to get my patches merged. I
value code review and I welcome constructive criticism. But this time
your request is not reasonable.

-- 
Jean Delvare
SUSE L3 Support
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