rtc: use class iteration api
Convert to use the class iteration api.
Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index f1e00ff..7e3ad4f 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -251,20 +251,23 @@
}
EXPORT_SYMBOL_GPL(rtc_update_irq);
+static int __rtc_match(struct device *dev, void *data)
+{
+ char *name = (char *)data;
+
+ if (strncmp(dev->bus_id, name, BUS_ID_SIZE) == 0)
+ return 1;
+ return 0;
+}
+
struct rtc_device *rtc_class_open(char *name)
{
struct device *dev;
struct rtc_device *rtc = NULL;
- down(&rtc_class->sem);
- list_for_each_entry(dev, &rtc_class->devices, node) {
- if (strncmp(dev->bus_id, name, BUS_ID_SIZE) == 0) {
- dev = get_device(dev);
- if (dev)
- rtc = to_rtc_device(dev);
- break;
- }
- }
+ dev = class_find_device(rtc_class, name, __rtc_match);
+ if (dev)
+ rtc = to_rtc_device(dev);
if (rtc) {
if (!try_module_get(rtc->owner)) {
@@ -272,7 +275,6 @@
rtc = NULL;
}
}
- up(&rtc_class->sem);
return rtc;
}