linux-kernel - Re: [PATCH 1/6] platform-drivers: msm: add single-wire serial bus interface (SSBI) driver

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Message-ID: <20130307232932.GE10304@kroah.com>
Date:	Fri, 8 Mar 2013 07:29:32 +0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	David Brown <davidb@...eaurora.org>
Cc:	Kenneth Heitke <kheitke@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/6] platform-drivers: msm: add single-wire serial bus
 interface (SSBI) driver

On Thu, Mar 07, 2013 at 10:50:40AM -0800, David Brown wrote:
> Greg Kroah-Hartman <gregkh@...uxfoundation.org> writes:
> 
> >> Without this device, the PMIC drivers won't work, regulators can't be
> >> turned on, and most of the other devices won't work.  I can try if it
> >> can still be made a module, and it might be good at exercising the
> >> deferred probe mechanism.
> >
> > If the PMIC drivers are dependant on the symbols in this module, there
> > should not be any problems, right?
> 
> The PMIC drivers directly will be, but the users of gpios/irqs and
> regulators coming from the PMIC will only depend on the generic APIs for
> this.  In theory, the deferred probe should handle this, and it might
> be useful for testing.
> 
> I can allow it to be a module, although I don't picture that really
> being a useful configuration.

It will allow this to get multi-arch build testing at the very least, a
very valuable thing as time goes on.  You can always specify this as 'Y'
in your defconfig for your board.

thanks,

greg k-h
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