From: Pavel Machek <pavel@ucw.cz>
To: Yauhen Kharuzhy <jekhor@gmail.com>
Cc: linux-pm@lists.linux-foundation.org
Subject: Re: uevent before resume completion
Date: Sun, 5 Oct 2008 11:49:47 +0200 [thread overview]
Message-ID: <20081005094947.GA2351@ucw.cz> (raw)
In-Reply-To: <20080922141959.GA7976@jeknote.loshitsa1.net>
On Mon 2008-09-22 17:19:59, Yauhen Kharuzhy wrote:
> Hi.
>
> We have an ARM board which does wakeup on USB cable connection to
> it. In our power supply driver "USB connect" interrupt handler calls
> power_supply_changed() which cause generation of uevent (in
> power_supply_changed_work() ). But usermodehelper_disabled
> still equals to 1 because resume process is not finished yet and
> userspace helper is not executed.
>
> How to fix this behaviour without breaking other kernel parts? We
> definitely need to invoke userspace helper on USB cable insertion. Yes,
> we can generate event after some time with timer but I think that a more
> elegant solution can be found.
If you do it such that your 'delayed uevent' code can be reused by
other subsystems, it should not be too bad...
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2008-10-05 9:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-22 14:19 uevent before resume completion Yauhen Kharuzhy
2008-10-05 9:49 ` Pavel Machek [this message]
2008-10-05 22:06 ` Nigel Cunningham
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