linux-kernel - Re: [RFC PATCH 0/3] ACPI/Power: Fix infinite loop of runtime resume and suspend caused by turning on power resource

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Message-ID: <1957403.qYMK7iKccF@vostro.rjw.lan>
Date:	Tue, 15 Oct 2013 23:05:04 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Lan Tianyu <tianyu.lan@...el.com>
Cc:	lenb@...nel.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/3] ACPI/Power: Fix infinite loop of runtime resume and suspend caused by turning on power resource

On Tuesday, October 15, 2013 11:04:50 PM Lan Tianyu wrote:
> Currently, clearing usb port(empty port) PM Qos NO_POWER_OFF flag twice will lead
> the usb port to fall into the infinite loop of runtime pm resume and
> suspend. This is caused by pm_request_resume() in the acpi_power_resume_dependent().
> Detail is in the following link.
> http://marc.info/?l=linux-acpi&m=138182749202885&w=2

As far as I can say, the bug is in USB, so I'm not quite sure why you want
to address it in the ACPI core?

Rafael

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