linux-kernel - Re: [PATCH V4 3/4] gpio: tegra: Get rid of all file scoped global variables

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Message-ID: <571DE912.3060602@nvidia.com>
Date:	Mon, 25 Apr 2016 15:23:22 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Thierry Reding <thierry.reding@...il.com>
CC:	<swarren@...dotorg.org>, <linus.walleij@...aro.org>,
	<gnurou@...il.com>, <linux-gpio@...r.kernel.org>,
	<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V4 3/4] gpio: tegra: Get rid of all file scoped global
 variables


On Monday 25 April 2016 03:30 PM, Thierry Reding wrote:
> * PGP Signed by an unknown key
>
> On Fri, Apr 22, 2016 at 03:39:13PM +0530, Laxman Dewangan wrote:
> [...]
>> diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
> [...]
>>   static struct gpio_chip tegra_gpio_chip = {
> This variable is still file-scoped. Why not get rid of it at the same
> time? It's rather pointless to remove all file-scoped variables except a
> single one, because now the driver still isn't properly equipped to deal
> with multiple instances (however theoretical that may be).
>

Yaah, Alex also pointed that to have the instance of gpio_chip in 
tegra_gpio_info and then do as
tgi->gc = tegra_gpio_chip.


same for irq_chip also.


I hope this will resolve the concern.