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rtc: update documentation wrt RTC_PIE/irq_set_state
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -185,6 +185,8 @@ driver returns ENOIOCTLCMD. Some common examples:
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hardware in the irq_set_freq function. If it isn't, return -EINVAL. If
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you cannot actually change the frequency, do not define irq_set_freq.
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* RTC_PIE_ON, RTC_PIE_OFF: the irq_set_state function will be called.
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If all else fails, check out the rtc-test.c driver!
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