gpiolib: cdev: document that line eflags are shared

Browse source

The line.eflags field is shared so document this fact and highlight it
throughout using READ_ONCE() and WRITE_ONCE() accessors.

Also use a local copy of the eflags in edge_irq_thread() to ensure
consistent control flow even if eflags changes.  This is only a defensive
measure as edge_irq_thread() is currently disabled when the eflags are
changed.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

...

This commit is contained in:

Kent Gibson 2020-10-14 14:29:21 +08:00 • committed by Bartosz Golaszewski

parent 7b58696d9a

commit 3ffb7c45d1

1 changed files with 21 additions and 11 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

32

drivers/gpio/gpiolib-cdev.c

View file