A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()

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This patch replaces the horribly coded of_count_named_gpios() with a
call to of_count_phandle_with_args() which is far more efficient. This
also changes the return value of of_gpio_count() & of_gpio_named_count()
from 'unsigned int' to 'int' so that it can return an error code. All
the users of that function are fixed up to correctly handle a negative
return value.

v2: Split GPIO portion into a separate patch

Tested-by: Andreas Larsson <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Rob Herring <[email protected]>
This commit is contained in:
Grant Likely 2013-02-12 17:48:37 +00:00
commit e80beb27d2
9 changed files with 41 additions and 71 deletions
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4
drivers/hwmon/gpio-fan.c
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@ -422,7 +422,7 @@ static int gpio_fan_get_of_pdata(struct device *dev,
/* Fill GPIO pin array */
pdata->num_ctrl = of_gpio_count(node);
if (!pdata->num_ctrl) {
if (pdata->num_ctrl <= 0) {
dev_err(dev, "gpios DT property empty / missing");
return -ENODEV;
}
@ -477,7 +477,7 @@ static int gpio_fan_get_of_pdata(struct device *dev,
pdata->speed = speed;
/* Alarm GPIO if one exists */
if (of_gpio_named_count(node, "alarm-gpios")) {
if (of_gpio_named_count(node, "alarm-gpios") > 0) {
struct gpio_fan_alarm *alarm;
int val;
enum of_gpio_flags flags;