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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-07-06 12:42:00 +0300
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-07-07 14:14:10 +0300
commit3068a254d5519cd5116f61297462da6d1aa84c20 (patch)
tree996896001b788c362f3de5e63c5ed9141f661754 /include/linux/rtc.h
parentb91336df8ac2f5d15a2132074ba596580526db1d (diff)
downloadlinux-3068a254d5519cd5116f61297462da6d1aa84c20.tar.xz
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>
Diffstat (limited to 'include/linux/rtc.h')
-rw-r--r--include/linux/rtc.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index d354f56e0cf5..8e4a5f44f59e 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -142,6 +142,8 @@ struct rtc_device {
/* 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 @@ extern struct rtc_device *devm_rtc_device_register(struct device *dev,
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 @@ static inline bool is_leap_year(unsigned int year)
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