From: Andrew Morton <akpm@osdl.org>
To: Alexander Atanasov <alex@ssi.bg>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] runtime PM deadlock
Date: Sun, 22 Feb 2004 17:28:49 -0800 [thread overview]
Message-ID: <20040222172849.76633696.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0402221908540.13861@mars.home.zaxl.net>
Alexander Atanasov <alex@ssi.bg> wrote:
>
> Hello,
>
> echo -n 3 > /sys/.../power/state; echo -n 2 > /sys/.../power/state
>
> dpm_runtime_suspend holds dpm_sem and calls
> dpm_runtime_resume which deadlocks, instead
> directly call runtime_resume.
>
> --
> have fun,
> alex
>
> ===== drivers/base/power/runtime.c 1.2 vs edited =====
> --- 1.2/drivers/base/power/runtime.c Wed Aug 20 09:23:32 2003
> +++ edited/drivers/base/power/runtime.c Sun Feb 22 18:26:42 2004
> @@ -51,7 +51,7 @@
> goto Done;
>
> if (dev->power.power_state)
> - dpm_runtime_resume(dev);
> + runtime_resume(dev);
>
> if (!(error = suspend_device(dev,state)))
> dev->power.power_state = state;
heh, that's been there since day one. Thanks.
prev parent reply other threads:[~2004-02-23 1:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-22 17:40 Alexander Atanasov
2004-02-23 1:28 ` Andrew Morton [this message]
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