diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-10-21 13:25:36 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-10-26 15:43:15 +0100 |
| commit | 8bbff39c6c6c86405fe023ccf50eeb44feacbde9 (patch) | |
| tree | e0a0d6126a7cc0ec0b3d21fcbf8be09cf4bd5aff /drivers | |
| parent | gpiolib: of: Use named item for enum gpiod_flags variable (diff) | |
| download | linux-8bbff39c6c6c86405fe023ccf50eeb44feacbde9.tar.xz linux-8bbff39c6c6c86405fe023ccf50eeb44feacbde9.zip | |
gpiolib: Unify expectations about ->request() returned value
Half of the code in the GPIO library is written in an expectation that
any non-zero value returned from the ->request() callback is an error code,
while some code checks only for negative values.
Unify expectations about ->request() returned value to be non-zero
for an error and 0 for the success.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpiolib-sysfs.c | 2 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index 728f6c687182..26c5466b8179 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -476,7 +476,7 @@ static ssize_t export_store(struct class *class, */ status = gpiod_request(desc, "sysfs"); - if (status < 0) { + if (status) { if (status == -EPROBE_DEFER) status = -ENODEV; goto done; diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 42fd6f3d6191..20e3eb74b5cb 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1985,7 +1985,7 @@ static int gpiod_request_commit(struct gpio_desc *desc, const char *label) ret = -EINVAL; spin_lock_irqsave(&gpio_lock, flags); - if (ret < 0) { + if (ret) { desc_set_label(desc, NULL); kfree_const(label); clear_bit(FLAG_REQUESTED, &desc->flags); @@ -2051,7 +2051,7 @@ int gpiod_request(struct gpio_desc *desc, const char *label) if (try_module_get(gdev->owner)) { ret = gpiod_request_commit(desc, label); - if (ret < 0) + if (ret) module_put(gdev->owner); else get_device(&gdev->dev); @@ -3958,7 +3958,7 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, * the device name as label */ ret = gpiod_request(desc, con_id ? con_id : devname); - if (ret < 0) { + if (ret) { if (ret == -EBUSY && flags & GPIOD_FLAGS_BIT_NONEXCLUSIVE) { /* * This happens when there are several consumers for |