]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
gpiolib: annotate gpio-intialization with __must_check
authorWolfram Sang <w.sang@pengutronix.de>
Thu, 13 Jan 2011 01:00:23 +0000 (17:00 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 13 Jan 2011 16:03:14 +0000 (08:03 -0800)
commit0fdae42d361bbb431ca0ab0efed5126a94821177
tree958a045aca3e40ca487dac67597496a7ed885115
parent49a367937fe4250144e24440e5a11ae4344202b1
gpiolib: annotate gpio-intialization with __must_check

Because GPIOs can have crucial functions especially in embedded systems,
we are better safe than sorry regarding their configuration.  For
gpio_request, the documentation is simply enforced: <quote>"The return
value of gpio_request() must be checked."</quote> For gpio_direction_* and
gpio_request_*, we now act accordingly.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/gpio.txt
include/asm-generic/gpio.h
include/linux/gpio.h