linux-kernel - Re: [PATCH v2] gpiolib: tighten up ACPI legacy gpio lookups

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Date:	Wed, 9 Dec 2015 16:11:30 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Alexandre Courbot <gnurou@...il.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Johan Hovold <johan@...nel.org>,
	"Tirdea, Irina" <irina.tirdea@...el.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] gpiolib: tighten up ACPI legacy gpio lookups

Hi Dmitry,

Sorry for me being so damned slow.

On Fri, Nov 27, 2015 at 6:37 PM, Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Tue, Nov 17, 2015 at 02:43:14PM +0100, Linus Walleij wrote:
>> On Wed, Nov 11, 2015 at 8:45 PM, Dmitry Torokhov
>> <dmitry.torokhov@...il.com> wrote:
>>
>> > We should not fall back to the legacy unnamed gpio lookup style if the
>> > driver requests gpios with different names, because we'll give out the same
>> > gpio twice. Let's keep track of the names that were used for the device and
>> > only do the fallback for the first name used.
>> >
>> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
>> > ---
>> >
>> > v1: incorporated changes suggested by Mika Westerberg in response to the
>> > draft patch I posted in Goodix thread.
>> >
>> > v2: moved acpi_can_fallback_to_crs body to drivers/gpio/gpiolib-acpi.c
>> > and provided stub for !CONFIG_ACPI case to fix build error if ACPI is
>> > disabled.
>>
>> Patch applied with Mika's ACK.
>>
>> Had to fuzz a bit to make it apply, hope nothing breaks.
>
> Hmm, I'd like to get this patch into my tree as well to apply Irina's
> goodix pieces on top to make sure they do not break. Would it be OK for
> me to just apply the patch and hope git will sort it out when we merge
> into next/mainline, you maybe you could prepare a 4.3-based branch with
> the patch for me to pull?

I had to fuzz the patch so then you need to get the version I applied out
of my tree.

But I'm not going to rebase the tree so you can pull commit
9c3c9bc9cc980d8981f75109f3921576daf75723
from the GPIO tree if you like. Or I can make a tag there if
you prefer, just tell me.

I'm stacking a loooot of GPIO patches on top, so I prefer not to have
any conflicts.

Yours,
Linus Walleij
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