From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Dooks Subject: Re: [PATCH] i2c-mpc: avoid I2C abnormal after resuming from deep sleep Date: Thu, 1 Mar 2012 11:27:24 +0000 Message-ID: <20120301112724.GE8441@trinity.fluff.org> References: <1330511961-22498-1-git-send-email-chenhui.zhao@freescale.com> <20120229183436.GA30545@pengutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20120229183436.GA30545-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Wolfram Sang Cc: Zhao Chenhui , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Li Yang List-Id: linux-i2c@vger.kernel.org On Wed, Feb 29, 2012 at 07:45:23PM +0100, Wolfram Sang wrote: > Hi, > > On Wed, Feb 29, 2012 at 06:39:21PM +0800, Zhao Chenhui wrote: > > When entering deep sleep, the value in the registers I2CFDR and > > I2CDFSRR are lost. This causes I2C access to fail after resuming. > > > > Add suspend/resume routines to save/restore the registers > > I2CFDR and I2CDFSRR. > > > > Signed-off-by: Zhao Chenhui > > Signed-off-by: Li Yang > > --- > > drivers/i2c/busses/i2c-mpc.c | 34 +++++++++++++++++++++++++++++++++- > > 1 files changed, 33 insertions(+), 1 deletions(-) > > > > diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c > > index a8ebb84..f95a647 100644 > > --- a/drivers/i2c/busses/i2c-mpc.c > > +++ b/drivers/i2c/busses/i2c-mpc.c > > @@ -1,7 +1,9 @@ > > /* > > * (C) Copyright 2003-2004 > > * Humboldt Solutions Ltd, adrian-nKrwMtk+6WksDtB2XHyCLA@public.gmane.org > > - > > + * > > + * Copyright 2012 Freescale Semiconductor, Inc. > > + * > > I'd think the change is too trivial to claim copyright on the file. I agree with that. -- Ben Dooks, ben-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org, http://www.fluff.org/ben/ Large Hadron Colada: A large Pina Colada that makes the universe disappear.