* [PATCH] runtime PM deadlock
@ 2004-02-22 17:40 Alexander Atanasov
2004-02-23 1:28 ` Andrew Morton
0 siblings, 1 reply; 2+ messages in thread
From: Alexander Atanasov @ 2004-02-22 17:40 UTC (permalink / raw)
To: linux-kernel
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;
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] runtime PM deadlock
2004-02-22 17:40 [PATCH] runtime PM deadlock Alexander Atanasov
@ 2004-02-23 1:28 ` Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2004-02-23 1:28 UTC (permalink / raw)
To: Alexander Atanasov; +Cc: linux-kernel
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.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2004-02-22 17:40 [PATCH] runtime PM deadlock Alexander Atanasov
2004-02-23 1:28 ` Andrew Morton
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