tree 7a600dde36983da45a92aa5c1bfe573652e9647d
parent b6730b20837e7402292d35d3cb910fff4dac7099
author Bartosz Golaszewski <brgl@bgdev.pl> 1497008485 +0200
committer Linus Walleij <linus.walleij@linaro.org> 1497943113 +0200

gpio: mockup: improve the debugfs input sanitization

We're currently only checking the first character of the input to the
debugfs event files, so a string like '0sdfdsf' is valid and indicates
a falling edge event.

Be more strict and only allow '0', '1', '0\n' & '1\n'.

While we're at it: move the sanitization code before the irq_enabled
check so that we indicate an error on invalid input even if nobody is
waiting for events.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>