linux-kernel - Re: [PATCH v3 2/2] gpiolib: use a mutex to protect the list of GPIO devices

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Message-ID: <CACRpkdYXz6Oi+ebdaW9Lu+Yz7ZyzKEwA1-unSnTEBEQhfOEWkg@mail.gmail.com>
Date: Wed, 20 Dec 2023 12:20:09 +0100
From: Linus Walleij <linus.walleij@...aro.org>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Kent Gibson <warthog618@...il.com>, 
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v3 2/2] gpiolib: use a mutex to protect the list of GPIO devices

On Fri, Dec 15, 2023 at 4:53 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:

> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
>
> The global list of GPIO devices is never modified or accessed from
> atomic context so it's fine to protect it using a mutex. Add a new
> global lock dedicated to the gpio_devices list and use it whenever
> accessing or modifying it.
>
> While at it: fold the sysfs registering of existing devices into
> gpiolib.c and make gpio_devices static within its compilation unit.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Excellent patch, and a conclusion of the previous discussions on this.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij