gpio: simplify gpiochip_export()

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For some reason gpiochip_export() would invalidate all the descriptors
of a chip if exporting it to sysfs failed. This does not appear as
necessary. Remove that part of the code.

While we are at it, add a note about the non-safety of temporarily
releasing a spinlock in the middle of the loop that protects its
iterator, and explain why this is done.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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Alexandre Courbot 2014-07-22 16:17:40 +09:00 • committed by Linus Walleij

parent f63ad7ed71

commit 14141a9352

1 changed files with 9 additions and 11 deletions

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20

drivers/gpio/gpiolib-sysfs.c

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