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| author | Linus Walleij <linus.walleij@linaro.org> | 2019-12-13 14:24:41 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-12-13 14:24:41 +0100 |
| commit | 279b1fed09eaa921379c6f1e3347e4161ef5f76a (patch) | |
| tree | f6e50b037ffb0d265f58f4f9347fc750eedbd52e /drivers/gpio/gpiolib.c | |
| parent | d935bd50dd14a7714cbdba9a76435dbb56edb1ae (diff) | |
| parent | 2688302bf1924ebccab2a3b298dd50b4f744d48d (diff) | |
| download | linux-279b1fed09eaa921379c6f1e3347e4161ef5f76a.tar.gz linux-279b1fed09eaa921379c6f1e3347e4161ef5f76a.tar.bz2 linux-279b1fed09eaa921379c6f1e3347e4161ef5f76a.zip | |
Merge tag 'gpio-v5.5-rc2-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into fixes
gpio fixes for v5.5-rc2
- fix gpio-xtensa build failure
- fix a regression in gpio-mockup
- fix a gcc warning in gpio-aspeed
- fix a section mismatch problem in xgs-iproc
- fix a problem with emulated open-drain outputs in gpiolib core
- switch to bitops in gpio-pca953x after converting the driver to
using bitmap
- add a missed file to MAINTAINERS entry
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index dce0b31f4125..78a16e42f222 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -220,6 +220,14 @@ int gpiod_get_direction(struct gpio_desc *desc) chip = gpiod_to_chip(desc); offset = gpio_chip_hwgpio(desc); + /* + * Open drain emulation using input mode may incorrectly report + * input here, fix that up. + */ + if (test_bit(FLAG_OPEN_DRAIN, &desc->flags) && + test_bit(FLAG_IS_OUT, &desc->flags)) + return 0; + if (!chip->get_direction) return -ENOTSUPP; |