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rtc: introduce rtc_device.ops_lock guard()

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Add guard class for rtc_device.ops_lock locks. This allows to simplify
error handling in interrupt handlers.

Link: https://patch.msgid.link/20261019211827.126262-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2026-10-19 23:18:02 +02:00
parent 95e83d98e1
commit ae8b3e1008
1 changed files with 3 additions and 0 deletions
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3
include/linux/rtc.h
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@ -168,6 +168,9 @@ struct rtc_device {
#define rtc_lock(d) mutex_lock(&d->ops_lock)
#define rtc_unlock(d) mutex_unlock(&d->ops_lock)
DEFINE_GUARD(rtc_ops, struct rtc_device *, mutex_lock(&_T->ops_lock),
mutex_unlock(&_T->ops_lock))
/* useful timestamps */
#define RTC_TIMESTAMP_BEGIN_0000 -62167219200ULL /* 0000-01-01 00:00:00 */
#define RTC_TIMESTAMP_BEGIN_1900 -2208988800LL /* 1900-01-01 00:00:00 */