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authorGrant Likely <grant.likely@secretlab.ca>2013-02-12 17:48:37 +0000
committerGrant Likely <grant.likely@secretlab.ca>2013-02-13 10:11:53 +0000
commite80beb27d2f81a1c3c8887e0e0a82d77bb392d28 (patch)
tree1f81c7ffb20b23d5f7a157e996fbb176779af88a /drivers/hwmon/gpio-fan.c
parentbd69f73f2c81eed9a398708b8c4bb3409ba1b0f9 (diff)
downloadop-kernel-dev-e80beb27d2f81a1c3c8887e0e0a82d77bb392d28.zip
op-kernel-dev-e80beb27d2f81a1c3c8887e0e0a82d77bb392d28.tar.gz
gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()
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 <andreas@gaisler.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'drivers/hwmon/gpio-fan.c')
-rw-r--r--drivers/hwmon/gpio-fan.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index 4e04c12..3978194 100644
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -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;
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