summary refs log tree commit diff
path: root/drivers/gpio/gpio-pca953x.c
diff options
context:
space:
mode:
authorRussell King <rmk+kernel@armlinux.org.uk>2019-12-07 16:20:18 +0000
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2019-12-11 10:44:31 +0100
commit256efaea1fdc4e38970489197409a26125ee0aaa (patch)
treeb627c8c66e5fe3d2eacfe8f92f1b493e484bca9d /drivers/gpio/gpio-pca953x.c
parent44fe5cb32c7599a4059931a98794e0418619aa96 (diff)
downloadlinux-256efaea1fdc4e38970489197409a26125ee0aaa.tar.gz
gpiolib: fix up emulated open drain outputs
gpiolib has a corner case with open drain outputs that are emulated.
When such outputs are outputting a logic 1, emulation will set the
hardware to input mode, which will cause gpiod_get_direction() to
report that it is in input mode. This is different from the behaviour
with a true open-drain output.

Unify the semantics here.

Cc: <stable@vger.kernel.org>
Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpio-pca953x.c')
0 files changed, 0 insertions, 0 deletions