[PATCH 0/3] spi: simplify getting .driver_data

From: Wolfram Sang
Date: Sun Oct 21 2018 - 16:00:54 EST


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 (3):
spi: spi-rspi: simplify getting .driver_data
spi: spi-sh-msiof: simplify getting .driver_data
spi: spi-zynqmp-gqspi: simplify getting .driver_data

drivers/spi/spi-rspi.c | 6 ++----
drivers/spi/spi-sh-msiof.c | 6 ++----
drivers/spi/spi-zynqmp-gqspi.c | 6 ++----
3 files changed, 6 insertions(+), 12 deletions(-)

--
2.19.0