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gpio: stub: Drop empty probe function 

A probe callback that just returns 0 does the same as not having a probe
callback at all. So gpio_stub_drv_probe() can be dropped without side
effects.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20251210070255.484169-2-u.kleine-koenig@baylibre.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
This commit is contained in:
Uwe Kleine-König 2025-12-10 08:02:53 +01:00 committed by Bartosz Golaszewski
parent 8f0b4cce44
commit 30eb99dfd3
1 changed files with 12 additions and 18 deletions
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30
drivers/gpio/gpiolib.c
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@ -5242,27 +5242,21 @@ void gpiod_put_array(struct gpio_descs *descs)
}
EXPORT_SYMBOL_GPL(gpiod_put_array);
static int gpio_stub_drv_probe(struct device *dev)
{
/*
* The DT node of some GPIO chips have a "compatible" property, but
* never have a struct device added and probed by a driver to register
* the GPIO chip with gpiolib. In such cases, fw_devlink=on will cause
* the consumers of the GPIO chip to get probe deferred forever because
* they will be waiting for a device associated with the GPIO chip
* firmware node to get added and bound to a driver.
*
* To allow these consumers to probe, we associate the struct
* gpio_device of the GPIO chip with the firmware node and then simply
* bind it to this stub driver.
*/
return 0;
}
/*
* The DT node of some GPIO chips have a "compatible" property, but
* never have a struct device added and probed by a driver to register
* the GPIO chip with gpiolib. In such cases, fw_devlink=on will cause
* the consumers of the GPIO chip to get probe deferred forever because
* they will be waiting for a device associated with the GPIO chip
* firmware node to get added and bound to a driver.
*
* To allow these consumers to probe, we associate the struct
* gpio_device of the GPIO chip with the firmware node and then simply
* bind it to this stub driver.
*/
static struct device_driver gpio_stub_drv = {
.name = "gpio_stub_drv",
.bus = &gpio_bus_type,
.probe = gpio_stub_drv_probe,
};
static int __init gpiolib_dev_init(void)