Linux-GPIO Archive on lore.kernel.org
 help / color / Atom feed
From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Serge Semin <fancer.lancer@gmail.com>,
	Hoan Tran <hoan@os.amperecomputing.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
	Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
	Rob Herring <robh+dt@kernel.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	devicetree <devicetree@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/7] gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip
Date: Tue, 28 Jul 2020 00:50:10 +0300
Message-ID: <20200727215010.qzhvavmskfoaapi5@mobilestation> (raw)
In-Reply-To: <CAHp75Vdeg6v_yLYjxZPJM7SgDP-fou6SEuaE8+TFCNW4c2r_rA@mail.gmail.com>

On Sat, Jul 25, 2020 at 03:12:49PM +0300, Andy Shevchenko wrote:
> On Sat, Jul 25, 2020 at 2:03 AM Serge Semin
> <Sergey.Semin@baikalelectronics.ru> wrote:
> > On Thu, Jul 23, 2020 at 01:03:17PM +0300, Andy Shevchenko wrote:
> > > On Thu, Jul 23, 2020 at 04:38:55AM +0300, Serge Semin wrote:

...
 
> > > > +           /* This will let us handle the parent IRQ in the driver */
> > > > +           girq->parents = NULL;
> > > > +           girq->num_parents = 0;
> > > > +           girq->parent_handler = NULL;
> 
> > > Shan't we do this before request_irq() call (at least for consistency with the
> > > rest of the drivers)?
> >
> > Technically we shan't. Please elaborate which drivers you are referring to?
> 
> All of them? Recent patches for IRQ chip template do something like
> 
> girq = &...;
> girq->foo = bar;
> ...
> ret = request_irq(...);
> 
> ...and here no more girq->baz = gaz; lines.
> 
> > Even the recent Linus' series "Use irqchip template" mostly does it in the
> > same order.
> 
> Funny, that's what I;m referring to.

It turns out my "mostly" was wrong in this matter. It's 4 out of 17 patches,
which make the initialization in the same order as mine:
drivers/gpio/gpio-max732x.c
drivers/gpio/gpio-pca953x.c
drivers/gpio/gpio-pcf857x.c
drivers/gpio/gpio-adp5588.c

while the rest of them does it in the order suggested by you:
drivers/gpio/gpio-pci-idio-16.c
drivers/gpio/gpio-pcie-idio-24.c
drivers/gpio/gpio-104-idio-16.c
drivers/gpio/gpio-104-dio-48e.c
drivers/gpio/gpio-ws16c48.c
drivers/gpio/gpio-rcar.c
drivers/gpio/gpio-wcove.c
drivers/pinctrl/pinctrl-amd.c
drivers/gpio/gpio-crystalcove.c
drivers/pinctrl/pinctrl-mcp23s08.c
drivers/pinctrl/pinctrl-sx150x.c
drivers/pinctrl/pinctrl-stmfx.c
drivers/gpio/gpio-tc3589x.c

Then, let's use the same order here as the most of the drivers do just for
consistency.

-Sergey 

> 
> -- 
> With Best Regards,
> Andy Shevchenko

  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-23  1:38 [PATCH 0/7] gpio: dwapb: Refactor GPIO resources initialization Serge Semin
2020-07-23  1:38 ` [PATCH 1/7] dt-bindings: gpio: dwapb: Add ngpios property support Serge Semin
2020-07-23 21:27   ` Rob Herring
2020-07-23  1:38 ` [PATCH 2/7] gpio: dwapb: Add ngpios DT-property support Serge Semin
2020-07-23  1:38 ` [PATCH 3/7] gpio: dwapb: Move MFD-specific IRQ handler Serge Semin
2020-07-23  1:38 ` [PATCH 4/7] gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip Serge Semin
2020-07-23 10:03   ` Andy Shevchenko
2020-07-24 23:03     ` Serge Semin
2020-07-25 12:12       ` Andy Shevchenko
2020-07-27 21:50         ` Serge Semin [this message]
2020-07-28  8:17           ` Linus Walleij
2020-07-28 13:22             ` Andy Shevchenko
2020-07-26 22:22       ` Linus Walleij
2020-07-29 12:58         ` Serge Semin
2020-07-29 15:10           ` Andy Shevchenko
2020-07-29 16:06             ` Serge Semin
2020-07-23 13:17   ` Linus Walleij
2020-07-23 14:08   ` Andy Shevchenko
2020-07-25  0:05     ` Serge Semin
2020-07-23  1:38 ` [PATCH 5/7] gpio: dwapb: Get reset control by means of resource managed interface Serge Semin
2020-07-23  1:38 ` [PATCH 6/7] gpio: dwapb: Get clocks " Serge Semin
2020-07-23  1:38 ` [PATCH 7/7] gpio: dwapb: Use resource managed GPIO-chip add data method Serge Semin
2020-07-23 10:06 ` [PATCH 0/7] gpio: dwapb: Refactor GPIO resources initialization Andy Shevchenko

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200727215010.qzhvavmskfoaapi5@mobilestation \
    --to=sergey.semin@baikalelectronics.ru \
    --cc=Alexey.Malahov@baikalelectronics.ru \
    --cc=Pavel.Parkhomenko@baikalelectronics.ru \
    --cc=andy.shevchenko@gmail.com \
    --cc=bgolaszewski@baylibre.com \
    --cc=devicetree@vger.kernel.org \
    --cc=fancer.lancer@gmail.com \
    --cc=hoan@os.amperecomputing.com \
    --cc=linus.walleij@linaro.org \
    --cc=linux-gpio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robh+dt@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-GPIO Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-gpio/0 linux-gpio/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-gpio linux-gpio/ https://lore.kernel.org/linux-gpio \
		linux-gpio@vger.kernel.org
	public-inbox-index linux-gpio

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-gpio


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git