linux-kernel - RE: [PATCH] arm: imx: suspend/resume: use outer

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Date:   Tue, 26 Dec 2017 09:18:12 +0000
From:   Peng Fan <peng.fan@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     "A.s. Dong" <aisheng.dong@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>,
        "van.freenix@...il.com" <van.freenix@...il.com>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH] arm: imx: suspend/resume: use outer_disable/resume


Hi Shawn,

> -----Original Message-----
> From: Shawn Guo [mailto:shawnguo@...nel.org]
> Sent: Tuesday, December 26, 2017 5:09 PM
> To: Peng Fan <peng.fan@....com>
> Cc: A.s. Dong <aisheng.dong@....com>; linux-kernel@...r.kernel.org; Russell
> King <linux@...linux.org.uk>; van.freenix@...il.com; Sascha Hauer
> <kernel@...gutronix.de>; Fabio Estevam <fabio.estevam@....com>; linux-
> arm-kernel@...ts.infradead.org
> Subject: Re: [PATCH] arm: imx: suspend/resume: use outer_disable/resume
> 
> On Tue, Dec 26, 2017 at 06:52:45AM +0000, Peng Fan wrote:
> > Hi Shawn,
> >
> > > -----Original Message-----
> > > From: Shawn Guo [mailto:shawnguo@...nel.org]
> > > Sent: Tuesday, December 26, 2017 11:31 AM
> > > To: Peng Fan <peng.fan@....com>
> > > Cc: A.s. Dong <aisheng.dong@....com>; linux-kernel@...r.kernel.org;
> > > Russell King <linux@...linux.org.uk>; Fabio Estevam
> > > <fabio.estevam@....com>; Sascha Hauer <kernel@...gutronix.de>;
> > > van.freenix@...il.com; linux-arm- kernel@...ts.infradead.org
> > > Subject: Re: [PATCH] arm: imx: suspend/resume: use
> > > outer_disable/resume
> > >
> > > On Sun, Dec 10, 2017 at 08:07:18PM +0800, Peng Fan wrote:
> > > > Use outer_disable/resume for suspend/resume.
> > > > With the two APIs used, code could be simplified and easy to
> > > > extend to introduce l2c_write_sec for i.MX platforms when moving
> > > > Linux Kernel runs in non-secure world.
> > > >
> > > > Signed-off-by: Peng Fan <peng.fan@....com>
> > > > Cc: Shawn Guo <shawnguo@...nel.org>
> > > > Cc: Sascha Hauer <kernel@...gutronix.de>
> > > > Cc: Fabio Estevam <fabio.estevam@....com>
> > > > Cc: Russell King <linux@...linux.org.uk>
> > > > Cc: Dong Aisheng <aisheng.dong@....com>
> > > > ---
> > > >  arch/arm/mach-imx/pm-imx6.c      |  2 ++
> > > >  arch/arm/mach-imx/suspend-imx6.S | 24 ------------------------
> > >
> > > I'm fine with the patch in general.  But this piece of code is
> > > running on a few
> > > i.MX6 platforms, and I'm wondering on which SoCs you have verified
> > > the change work fine.
> >
> > I tested it on 6Q-SDB board. Is it ok?
> 
> Okay, I will get it into linux-next for a bit wider testing.

Thanks. I missed to note that, I applied this patch in my testing
https://www.spinics.net/lists/arm-kernel/msg623610.html
to avoid suspicious RCU usage.

Thanks,
Peng.

> 
> Shawn