gpiolib: rewrite gpiodev_add_to_list

Browse source

The original code of gpiodev_add_to_list is not very clear which
lead to bugs or compiling warning, reference the following patches:
Bugs:
1.  Commit ef7c755303 ("gpiolib: improve overlap check of range of
    gpio").
2.  Commit 96098df125 ("gpiolib: fix chip order in gpio list")

Warning:
1.  Commit e28ecca6ea ("gpio: fix warning about iterator").
of gpio").

There is a off-list discussion about how to improve it consequently.
This commit try to follow this by rewriting the whole functions.

Tested pass with my gpio mockup driver and test scripts[1].

[1] http://www.spinics.net/lists/linux-gpio/msg09598.html

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

...

This commit is contained in:

Bamvor Jian Zhang 2016-02-26 22:37:14 +08:00 • committed by Linus Walleij

parent 24030d9d95

commit a961f9b472

1 changed files with 25 additions and 40 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

69

drivers/gpio/gpiolib.c

View file