gpiolib: skip unwanted events, don't convert them to opposite edge
authorBartosz Golaszewski <brgl@bgdev.pl>
Mon, 3 Jul 2017 09:12:03 +0000 (11:12 +0200)
committerLinus Walleij <linus.walleij@linaro.org>
Tue, 1 Aug 2017 12:07:35 +0000 (14:07 +0200)
commitdf1e76f28ffe87d1b065eecab2d0fbb89e6bdee5
tree726b2e39ad615a59bbbf7b64d9e0a199a9faa518
parenta589e211bd74715a63f507dade294ba618259ff7
gpiolib: skip unwanted events, don't convert them to opposite edge

The previous fix for filtering out of unwatched events was not entirely
correct. Instead of skipping the events we don't want, they are now
interpreted as events with opposing edge.

In order to fix it: always read the GPIO line value on interrupt and
only emit the event if it corresponds with the event type we requested.

Cc: stable@vger.kernel.org
Fixes: ad537b822577 ("gpiolib: fix filtering out unwanted events")
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/gpiolib.c