gpiolib: Split out for_each_gpio_desc() macro

In some cases we want to traverse all GPIO descriptors for given
chip, let's split out for_each_gpio_desc() macro for such cases.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index d41041966cf572c0cc08a2f803cc123e8691eef0..2bdc1efad66e62ef123dd9fbf61a507674e40b37 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -308,15 +308,10 @@ static struct gpio_desc *gpio_name_to_desc(const char * const name)
        spin_lock_irqsave(&gpio_lock, flags);
 
        list_for_each_entry(gdev, &gpio_devices, list) {
-               int i;
-
-               for (i = 0; i != gdev->ngpio; ++i) {
-                       struct gpio_desc *desc = &gdev->descs[i];
-
-                       if (!desc->name)
-                               continue;
+               struct gpio_desc *desc;
 
-                       if (!strcmp(desc->name, name)) {
+               for_each_gpio_desc(gdev->chip, desc) {
+                       if (desc->name && !strcmp(desc->name, name)) {
                                spin_unlock_irqrestore(&gpio_lock, flags);
                                return desc;
                        }

diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 7bac62d36f0c292384f993d9708d2b0f8efc5e7f..eef3ec073d9eeb96e40a840f8ace56ecd9101ff2 100644 (file)
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -100,10 +100,13 @@ struct gpio_array {
 
 struct gpio_desc *gpiochip_get_desc(struct gpio_chip *gc, unsigned int hwnum);
 
-#define for_each_gpio_desc_with_flag(gc, desc, flag)                   \
+#define for_each_gpio_desc(gc, desc)                                   \
        for (unsigned int __i = 0;                                      \
             __i < gc->ngpio && (desc = gpiochip_get_desc(gc, __i));    \
             __i++)                                                     \
+
+#define for_each_gpio_desc_with_flag(gc, desc, flag)                   \
+       for_each_gpio_desc(gc, desc)                                    \
                if (!test_bit(flag, &desc->flags)) {} else
 
 int gpiod_get_array_value_complex(bool raw, bool can_sleep,