rtc: introduce new registration method
Introduce rtc_register_device() to register an already allocated and
initialized struct rtc_device. It automatically sets up the owner and the
two steps allocation/registration will allow to remove race conditions in
the IRQ handling of some driver. It also allows to properly extend the core
without adding more arguments to rtc_device_register().
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index d354f56..8e4a5f4 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -142,6 +142,8 @@
/* Some hardware can't support UIE mode */
int uie_unsupported;
+ bool registered;
+
#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL
struct work_struct uie_task;
struct timer_list uie_timer;
@@ -163,6 +165,8 @@
const char *name,
const struct rtc_class_ops *ops,
struct module *owner);
+struct rtc_device *devm_rtc_allocate_device(struct device *dev);
+int __rtc_register_device(struct module *owner, struct rtc_device *rtc);
extern void rtc_device_unregister(struct rtc_device *rtc);
extern void devm_rtc_device_unregister(struct device *dev,
struct rtc_device *rtc);
@@ -218,6 +222,9 @@
return (!(year % 4) && (year % 100)) || !(year % 400);
}
+#define rtc_register_device(device) \
+ __rtc_register_device(THIS_MODULE, device)
+
#ifdef CONFIG_RTC_HCTOSYS_DEVICE
extern int rtc_hctosys_ret;
#else