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gpiolib: replace find_chip_by_name() with gpio_device_find_by_label()

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Remove all remaining uses of find_chip_by_name() (and subsequently:
gpiochip_find()) from gpiolib.c and use the new
gpio_device_find_by_label() instead.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Bartosz Golaszewski 2023-09-27 16:29:27 +02:00
parent 9b41878084
commit db54696044
1 changed files with 11 additions and 22 deletions
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33
drivers/gpio/gpiolib.c
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@ -1145,18 +1145,6 @@ struct gpio_device *gpio_device_find_by_label(const char *label)
}
EXPORT_SYMBOL_GPL(gpio_device_find_by_label);
static int gpiochip_match_name(struct gpio_chip *gc, void *data)
{
const char *name = data;
return !strcmp(gc->label, name);
}
static struct gpio_chip *find_chip_by_name(const char *name)
{
return gpiochip_find((void *)name, gpiochip_match_name);
}
/**
* gpio_device_get() - Increase the reference count of this GPIO device
* @gdev: GPIO device to increase the refcount for
@ -3908,7 +3896,6 @@ EXPORT_SYMBOL_GPL(gpiod_remove_lookup_table);
*/
void gpiod_add_hogs(struct gpiod_hog *hogs)
{
struct gpio_chip *gc;
struct gpiod_hog *hog;
mutex_lock(&gpio_machine_hogs_mutex);
@ -3920,9 +3907,10 @@ void gpiod_add_hogs(struct gpiod_hog *hogs)
* The chip may have been registered earlier, so check if it
* exists and, if so, try to hog the line now.
*/
gc = find_chip_by_name(hog->chip_label);
if (gc)
gpiochip_machine_hog(gc, hog);
struct gpio_device *gdev __free(gpio_device_put) =
gpio_device_find_by_label(hog->chip_label);
if (gdev)
gpiochip_machine_hog(gpio_device_get_chip(gdev), hog);
}
mutex_unlock(&gpio_machine_hogs_mutex);
@ -3972,6 +3960,7 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id,
struct gpio_desc *desc = ERR_PTR(-ENOENT);
struct gpiod_lookup_table *table;
struct gpiod_lookup *p;
struct gpio_chip *gc;
guard(mutex)(&gpio_lookup_lock);
@ -3980,8 +3969,6 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id,
return desc;
for (p = &table->table[0]; p->key; p++) {
struct gpio_chip *gc;
/* idx must always match exactly */
if (p->idx != idx)
continue;
@ -4002,9 +3989,9 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id,
return ERR_PTR(-EPROBE_DEFER);
}
gc = find_chip_by_name(p->key);
if (!gc) {
struct gpio_device *gdev __free(gpio_device_put) =
gpio_device_find_by_label(p->key);
if (!gdev) {
/*
* As the lookup table indicates a chip with
* p->key should exist, assume it may
@ -4017,6 +4004,8 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id,
return ERR_PTR(-EPROBE_DEFER);
}
gc = gpio_device_get_chip(gdev);
if (gc->ngpio <= p->chip_hwnum) {
dev_err(dev,
"requested GPIO %u (%u) is out of range [0..%u] for chip %s\n",
@ -4025,7 +4014,7 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id,
return ERR_PTR(-EINVAL);
}
desc = gpiochip_get_desc(gc, p->chip_hwnum);
desc = gpio_device_get_desc(gdev, p->chip_hwnum);
*flags = p->flags;
return desc;