When calling rtc_device_unregister, we are not freeing the id used by the
driver.
So when doing a unload/load cycle for a RTC driver (e.g. rmmod rtc_cmos
&& modprobe rtc_cmos), its id is incremented by one. As a consequence,
we no longer have neither an rtc0 driver nor a /proc/driver/rtc (as it
only exists for the first driver).
Signed-off-by: Vincent Palatin <[email protected]>
---
drivers/rtc/class.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index dc4c274..37b1d82 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -238,6 +238,7 @@ void rtc_device_unregister(struct rtc_device *rtc)
rtc_proc_del_device(rtc);
device_unregister(&rtc->dev);
rtc->ops = NULL;
+ ida_simple_remove(&rtc_ida, rtc->id);
mutex_unlock(&rtc->ops_lock);
put_device(&rtc->dev);
}
--
1.7.7.3