From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: [[PATCH]] drivers: leds/trigger: system cannot enter suspend
Date: Tue, 6 Jun 2017 21:25:54 +0200 [thread overview]
Message-ID: <20170606192554.GA32171@amd> (raw)
In-Reply-To: <1496716596-45414-1-git-send-email-bo.zhang@nxp.com>
On Tue 2017-06-06 10:36:36, Zhang Bo wrote:
> System cannot enter suspend mode because of heartbeat led trigger.
> In autosleep_wq, try_to_suspend function will try to enter suspend
> mode in specific period. it will get wakeup_count then call pm_notifier
> chain callback function and freeze processes.
> Heartbeat_pm_notifier is called and it call led_trigger_unregister to
> change the trigger of led device to none. It will send uevent
Why is heartbeat_pm_notifier calling led_trigger_unregister? That
sounds like a bug.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2017-06-06 19:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-06 2:36 [[PATCH]] drivers: leds/trigger: system cannot enter suspend Zhang Bo
2017-06-06 19:25 ` Pavel Machek [this message]
2017-06-06 20:05 ` Jacek Anaszewski
2017-06-06 20:19 ` Grygorii Strashko
2017-06-06 20:34 ` Pavel Machek
2017-06-06 20:38 ` Pavel Machek
2017-06-07 4:24 ` Bruce Zhang
2017-06-07 15:38 ` Grygorii Strashko
2017-06-09 22:16 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2017-06-05 7:36 Zhang Bo
2017-06-05 19:27 ` Jacek Anaszewski
2017-06-05 19:27 ` Jacek Anaszewski
2017-06-06 2:47 ` Bruce Zhang
2017-06-06 2:47 ` Bruce Zhang
2017-06-06 20:00 ` Jacek Anaszewski
2017-06-06 20:00 ` Jacek Anaszewski
2017-06-05 20:05 ` Pavel Machek
2017-06-06 2:11 ` Bruce Zhang
2017-06-09 11:25 ` Linus Walleij
2017-06-09 13:01 ` Bruce Zhang
2017-06-09 13:01 ` Bruce Zhang
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