diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2020-01-17 08:59:29 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-01-17 08:59:29 +0100 |
| commit | 6a77de2596a8d02cbfe9cebe448d8575e4354c9a (patch) | |
| tree | 13e7621c147ef1415195213089ce3c2c94590bde /drivers/gpio/gpiolib.c | |
| parent | 59c324683400b41caa6d85b091e812ee3d5415c3 (diff) | |
| parent | b3a987b0264d3ddbb24293ebff10eddfc472f653 (diff) | |
| download | linux-6a77de2596a8d02cbfe9cebe448d8575e4354c9a.tar.bz2 | |
Merge tag 'v5.5-rc6' into devel
Linux 5.5-rc6
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 6d04e444f422..4275b8d771ad 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; @@ -4456,8 +4464,9 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id, if (chip->ngpio <= p->chip_hwnum) { dev_err(dev, - "requested GPIO %d is out of range [0..%d] for chip %s\n", - idx, chip->ngpio, chip->label); + "requested GPIO %u (%u) is out of range [0..%u] for chip %s\n", + idx, p->chip_hwnum, chip->ngpio - 1, + chip->label); return ERR_PTR(-EINVAL); } |