tree 1581699d7859a249f675af043d5f09ebfa92d5d2
parent 879b075a9a364a325988d4484b74311edfef82a1
author Puyou Lu <puyou.lu@gmail.com> 1651824390 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1652351137 +0200

gpio: pca953x: fix irq_stat not updated when irq is disabled (irq_mask not set)

commit dba785798526a3282cc4d0f0ea751883715dbbb4 upstream.

When one port's input state get inverted (eg. from low to hight) after
pca953x_irq_setup but before setting irq_mask (by some other driver such as
"gpio-keys"), the next inversion of this port (eg. from hight to low) will not
be triggered any more (because irq_stat is not updated at the first time). Issue
should be fixed after this commit.

Fixes: 89ea8bbe9c3e ("gpio: pca953x.c: add interrupt handling capability")
Signed-off-by: Puyou Lu <puyou.lu@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>