linux-kernel - Re: [PATCH v2 2/4] mfd: lpc_ich: Do not create iTCO watchdog when WDAT table exists

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Message-ID: <20160929172000.GC2844@dell>
Date:   Thu, 29 Sep 2016 18:20:00 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Wim Van Sebroeck <wim@...ana.be>,
        Guenter Roeck <linux@...ck-us.net>,
        Len Brown <lenb@...nel.org>, Jean Delvare <jdelvare@...e.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        Peter Tyser <ptyser@...-inc.com>,
        Zha Qipeng <qipeng.zha@...el.com>,
        Darren Hart <dvhart@...radead.org>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/4] mfd: lpc_ich: Do not create iTCO watchdog when
 WDAT table exists

On Wed, 28 Sep 2016, Rafael J. Wysocki wrote:

> On Wednesday, September 28, 2016 02:09:41 AM Lee Jones wrote:
> > On Wed, 28 Sep 2016, Rafael J. Wysocki wrote:
> > 
> > > On Tuesday, September 27, 2016 08:41:14 PM Lee Jones wrote:
> > > > On Tue, 20 Sep 2016, Mika Westerberg wrote:
> > > > 
> > > > > ACPI WDAT table is the preferred way to use hardware watchdog over the
> > > > > native iTCO_wdt. Windows only uses this table for its hardware watchdog
> > > > > implementation so we should be relatively safe to trust it has been
> > > > > validated by OEMs
> > > > > 
> > > > > Prevent iTCO watchdog creation if we detect that there is ACPI WDAT table.
> > > > > 
> > > > > Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> > > > > Reviewed-by: Guenter Roeck <linux@...ck-us.net>
> > > > > ---
> > > > >  drivers/mfd/lpc_ich.c | 4 ++++
> > > > >  1 file changed, 4 insertions(+)
> > > > 
> > > > Applied, thanks.
> > > 
> > > Well, I applied this too.
> > 
> > How can you apply this without an MFD Ack?
> 
> First, Guenter has reviewed it.

Guenter isn't the MFD Maintiner.

> Second, there was no response to this:
> 
> http://marc.info/?l=linux-acpi&m=147467687316117&w=4

This in my queue.  I was on vacation last week.

> > > And it depends on the [1/4], doesn't it?
> > 
> > Yes, I just found that out myself. :)
> > 
> > Well I only have 4 lines of changes in drivers/mfd/lpc_ich.c, so I
> > guess it'll be okay to apply this without the fear of conflicts.
> > 
> > Do that end, please apply my:
> > 
> > Acked-by: Lee Jones <lee.jones@...aro.org>
> 
> Thanks!

NP

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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