linux-kernel - Re: [ 33/40] rtc: rtc-mv: Add support for clk to avoid lockups

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Date:	Tue, 12 Mar 2013 16:15:23 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Jason Cooper <jason@...edaemon.net>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Simon Baatz <gmbnomis@...il.com>, Andrew Lunn <andrew@...n.ch>
Subject: Re: [ 33/40] rtc: rtc-mv: Add support for clk to avoid lockups

On Tue, Mar 12, 2013 at 07:08:43PM -0400, Jason Cooper wrote:
> Greg,
> 
> On Tue, Mar 12, 2013 at 03:43:54PM -0700, Greg Kroah-Hartman wrote:
> > 3.4-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Andrew Lunn <andrew@...n.ch>
> > 
> > commit 89c58c198b252f2bc20657fdd72a2aea788c435c upstream.
> > 
> > The Marvell RTC on Kirkwood makes use of the runit clock. Ensure the
> > driver clk_prepare_enable() this clock, otherwise there is a danger
> > the SoC will lockup when accessing RTC registers with the clock
> > disabled.
> > 
> > Reported-by: Simon Baatz <gmbnomis@...il.com>
> > Signed-off-by: Andrew Lunn <andrew@...n.ch>
> > Tested-by: Simon Baatz <gmbnomis@...il.com>
> > Signed-off-by: Jason Cooper <jason@...edaemon.net>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > 
> > ---
> >  arch/arm/boot/dts/kirkwood.dtsi |    1 +
> >  drivers/rtc/rtc-mv.c            |   28 ++++++++++++++++++++++++----
> >  2 files changed, 25 insertions(+), 4 deletions(-)
> 
> Please drop from 3.4-stable.  devm_clk_get() wasn't available.

Now dropped.

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