From: Stephen Boyd <swboyd@chromium.org>
To: Andy Shevchenko <andy.shevchenko@gmail.com>,
Wolfram Sang <wsa@the-dreams.de>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Riku Voipio <riku.voipio@iki.fi>,
Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
Linux LED Subsystem <linux-leds@vger.kernel.org>
Subject: Re: [PATCH 01/10] leds: pca953x: Use of_device_get_match_data()
Date: Mon, 14 Oct 2019 13:54:27 -0700 [thread overview]
Message-ID: <5da4e084.1c69fb81.567f9.4b9c@mx.google.com> (raw)
In-Reply-To: <CAHp75Vebn48hbzqKWzV3aj4NEBCta_Fn7zOQHzsznW4=6cXLsQ@mail.gmail.com>
Quoting Andy Shevchenko (2019-10-14 10:50:06)
> On Sat, Oct 5, 2019 at 12:47 AM Stephen Boyd <swboyd@chromium.org> wrote:
> >
> > This driver can use the of_device_get_match_data() API to simplify the
> > code. Replace calls to of_match_device() with this newer API under the
> > assumption that where it is called will be when we know the device is
> > backed by a DT node. This nicely avoids referencing the match table when
> > it is undefined with configurations where CONFIG_OF=n.
>
> > + devid = (int)(uintptr_t)of_device_get_match_data(dev);
>
> > + devid = (int)(uintptr_t)of_device_get_match_data(&client->dev);
>
> This still leaves it OF-centric.
> Better to use device_get_match_data().
>
> Also, I'm thinking that following may help to clean a lot of the i2c
> client drivers
>
> static inline // perhaps no
> const void *i2c_device_get_match_data(struct i2c_client *client, const
> struct i2c_device_id *id)
> {
> if (id)
> return (const void *)id->driver_data;
> return device_get_match_data(&client->dev);
> }
>
Looks alright to me. Maybe device_get_match_data() can look at the bus
and call some bus op if the firmware match isn't present? Then we can
replace a bunch of these calls with device_get_match_data() and it will
"do the right thing" regardless of what bus or firmware the device is
running on.
next prev parent reply other threads:[~2019-10-14 20:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-04 21:43 [PATCH 00/10] Stop NULLifying match pointer in of_match_device() Stephen Boyd
2019-10-04 21:43 ` [PATCH 01/10] leds: pca953x: Use of_device_get_match_data() Stephen Boyd
2019-10-06 12:15 ` Jacek Anaszewski
2019-10-07 8:01 ` Geert Uytterhoeven
2019-10-13 12:10 ` Pavel Machek
2019-10-14 17:50 ` Andy Shevchenko
2019-10-14 20:54 ` Stephen Boyd [this message]
2019-10-15 9:02 ` Andy Shevchenko
2019-10-15 22:41 ` Stephen Boyd
2019-10-16 13:46 ` Andy Shevchenko
2019-11-04 9:09 ` Pavel Machek
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=5da4e084.1c69fb81.567f9.4b9c@mx.google.com \
--to=swboyd@chromium.org \
--cc=andy.shevchenko@gmail.com \
--cc=arnd@arndb.de \
--cc=dmurphy@ti.com \
--cc=frowand.list@gmail.com \
--cc=geert@linux-m68k.org \
--cc=jacek.anaszewski@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-leds@vger.kernel.org \
--cc=pavel@ucw.cz \
--cc=riku.voipio@iki.fi \
--cc=robh+dt@kernel.org \
--cc=wsa@the-dreams.de \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).