gpio: mockup: add helpers for accessing the gpio ranges

In order to avoid repeating the calculations on every access - add
helpers for gpio base and ngpio components of the ranges array.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index a6bfbe5..ea8c730 100644 (file)
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -81,6 +81,16 @@ module_param_named(gpio_mockup_named_lines,
 
 static struct dentry *gpio_mockup_dbg_dir;
 
+static int gpio_mockup_range_base(unsigned int index)
+{
+       return gpio_mockup_ranges[index * 2];
+}
+
+static int gpio_mockup_range_ngpio(unsigned int index)
+{
+       return gpio_mockup_ranges[index * 2 + 1];
+}
+
 static int gpio_mockup_get(struct gpio_chip *gc, unsigned int offset)
 {
        struct gpio_mockup_chip *chip = gpiochip_get_data(gc);
@@ -351,7 +361,7 @@ static int __init gpio_mockup_init(void)
         * always be greater than 0.
         */
        for (i = 0; i < num_chips; i++) {
-               if (gpio_mockup_ranges[i * 2 + 1] < 0)
+               if (gpio_mockup_range_ngpio(i) < 0)
                        return -EINVAL;
        }
 
@@ -367,10 +377,10 @@ static int __init gpio_mockup_init(void)
 
        for (i = 0; i < num_chips; i++) {
                pdata.index = index++;
-               pdata.base = gpio_mockup_ranges[i * 2];
+               pdata.base = gpio_mockup_range_base(i);
                pdata.ngpio = pdata.base < 0
-                               ? gpio_mockup_ranges[i * 2 + 1]
-                               : gpio_mockup_ranges[i * 2 + 1] - pdata.base;
+                               ? gpio_mockup_range_ngpio(i)
+                               : gpio_mockup_range_ngpio(i) - pdata.base;
                pdata.named_lines = gpio_mockup_named_lines;
 
                pdev = platform_device_register_resndata(NULL,