linux-kernel - Re: [PATCH 0/2] leds: gpio: Add devlink between the leds-gpio device and the gpio used.

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Date: Tue, 20 Feb 2024 14:36:57 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Saravana Kannan <saravanak@...gle.com>, Linus Walleij
 <linus.walleij@...aro.org>, Pavel Machek <pavel@....cz>, Lee Jones
 <lee@...nel.org>, linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-leds@...r.kernel.org, Luca Ceresoli <luca.ceresoli@...tlin.com>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH 0/2] leds: gpio: Add devlink between the leds-gpio
 device and the gpio used.

Hi Bartosz,

On Tue, 20 Feb 2024 12:40:17 +0100
Bartosz Golaszewski <brgl@...ev.pl> wrote:

> On Tue, Feb 20, 2024 at 12:11 PM Herve Codina <herve.codina@...tlin.com> wrote:
> >
> > Hi,
> >
> > When a gpio used by the leds-gpio device is removed, the leds-gpio
> > device continues to use this gpio. Also, when the gpio is back, the
> > leds-gpio still uses the old removed gpio.
> >
> > A consumer/supplier relationship is missing between the leds-gpio device
> > (consumer) and the gpio used (supplier).
> >
> > This series adds an addionnal devlink between this two device.
> > With this link when the gpio is removed, the leds-gpio device is also
> > removed.
> >
> > Best regards,
> > Hervé Codina
> >
> > Herve Codina (2):
> >   gpiolib: Introduce gpiod_device_add_link()
> >   leds: gpio: Add devlinks between the gpio consumed and the gpio leds
> >     device
> >
> >  drivers/gpio/gpiolib.c        | 32 ++++++++++++++++++++++++++++++++
> >  drivers/leds/leds-gpio.c      | 15 +++++++++++++++
> >  include/linux/gpio/consumer.h |  5 +++++
> >  3 files changed, 52 insertions(+)
> >
> > --
> > 2.43.0
> >  
> 
> You should probably Cc Saravana on anything devlink related.
> 

Sure, I am going to resend the whole series adding Saravana.

Regards,
Hervé