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From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-kernel@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org
Subject: [PATCH 0/5] pinctrl: simplify getting .driver_data
Date: Sun, 21 Oct 2018 22:00:26 +0200	[thread overview]
Message-ID: <20181021200032.1833-1-wsa+renesas@sang-engineering.com> (raw)

I got tired of fixing this in Renesas drivers manually, so I took the big
hammer. Remove this cumbersome code pattern which got copy-pasted too much
already:

-	struct platform_device *pdev = to_platform_device(dev);
-	struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
+	struct ep93xx_keypad *keypad = dev_get_drvdata(dev);

A branch, tested by buildbot, can be found here:

git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git coccinelle/get_drvdata

I have been asked if it couldn't be done for dev_set_drvdata as well. I checked
it and did not find one occasion where it could be simplified like this. Not
much of a surprise because driver_data is usually set in probe() functions
which access struct platform_device in many other ways.

I am open for other comments, suggestions, too, of course.

Here is the cocci-script I created:

@@
struct device* d;
identifier pdev;
expression *ptr;
@@
(
-	struct platform_device *pdev = to_platform_device(d);
|
-	struct platform_device *pdev;
	...
-	pdev = to_platform_device(d);
)
	<... when != pdev
-	&pdev->dev
+	d
	...>

	ptr =
-	platform_get_drvdata(pdev)
+	dev_get_drvdata(d)

	<... when != pdev
-	&pdev->dev
+	d
	...>

Kind regards,

   Wolfram


Wolfram Sang (5):
  pinctrl: intel: pinctrl-baytrail: simplify getting .driver_data
  pinctrl: intel: pinctrl-cherryview: simplify getting .driver_data
  pinctrl: intel: pinctrl-intel: simplify getting .driver_data
  pinctrl: pinctrl-amd: simplify getting .driver_data
  pinctrl: pinctrl-at91-pio4: simplify getting .driver_data

 drivers/pinctrl/intel/pinctrl-baytrail.c   | 6 ++----
 drivers/pinctrl/intel/pinctrl-cherryview.c | 6 ++----
 drivers/pinctrl/intel/pinctrl-intel.c      | 6 ++----
 drivers/pinctrl/pinctrl-amd.c              | 6 ++----
 drivers/pinctrl/pinctrl-at91-pio4.c        | 6 ++----
 5 files changed, 10 insertions(+), 20 deletions(-)

-- 
2.19.0


             reply	other threads:[~2018-10-21 20:00 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-21 20:00 Wolfram Sang [this message]
2018-10-21 20:00 ` [PATCH 1/5] pinctrl: intel: pinctrl-baytrail: " Wolfram Sang
2018-10-21 21:19   ` Andy Shevchenko
2018-10-22  8:17     ` Mika Westerberg
2018-10-22 10:55       ` Andy Shevchenko
2018-10-30 13:22   ` Linus Walleij
2018-10-21 20:00 ` [PATCH 2/5] pinctrl: intel: pinctrl-cherryview: " Wolfram Sang
2018-10-22  8:17   ` Mika Westerberg
2018-10-21 20:00 ` [PATCH 3/5] pinctrl: intel: pinctrl-intel: " Wolfram Sang
2018-10-22  8:17   ` Mika Westerberg
2018-10-21 20:00 ` [PATCH 4/5] pinctrl: pinctrl-amd: " Wolfram Sang
2018-10-30 13:16   ` Linus Walleij
2018-10-21 20:00 ` [PATCH 5/5] pinctrl: pinctrl-at91-pio4: " Wolfram Sang
2018-10-24 11:15   ` Alexandre Belloni
2018-10-29 14:32   ` Ludovic Desroches
2018-10-30 13:24   ` Linus Walleij

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