linux-kernel - Re: [PATCH 5/7] backports: add support for voltage / current regulator drivers

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Message-ID: <20130415162534.GJ15837@opensource.wolfsonmicro.com>
Date:	Mon, 15 Apr 2013 17:25:34 +0100
From:	Mark Brown <broonie@...nel.org>
To:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
Cc:	johannes@...solutions.net, backports@...r.kernel.org,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/7] backports: add support for voltage / current
 regulator drivers

On Sat, Apr 13, 2013 at 07:13:42AM -0700, Luis R. Rodriguez wrote:

> This backports the latest regulator drivers for kernels >= 3.4.
> We enable the regulator only on kernels >= 3.4 given that
> it relies on the new probe deferral mechanism which would
> otherwise mean having to support drivers that do not probe

There's no great reliance on deferred probes here...

> correctly. Note that 3.2 had a base regulator implementation
> but that was just stubs.

I'm sorry, what on earth makes you say that?  The regulator API has been
usefully functional since it was merged.

> I did look into a way to upgrade the core kernel regulator
> but given that it relies on late_initcall() and core_initcall()
> we can't update this part of the kernel. I even looked at
> using ksplice for this but it seems ksplice can't be used to
> update init sections on the vmlinux ELF. I also haven't much
> updates to these routines since 3.4 except for 86f5fcfc.

Again I'm not sure what you're talking about here?

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