linux-kernel - Re: [PATCH] PCI: Add disabling pm async quirk for JMicron chips

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Message-ID: <CAOzJMDSagkZWiMMWFW1y23EtmdhMp1pUobwMXZvf0BpLUqxbeA@mail.gmail.com>
Date:	Mon, 11 May 2015 14:58:58 +0800
From:	Aaron Lu <aaron.lu@...el.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Chuansheng Liu <chuansheng.liu@...el.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	mister.freeman@...oste.net, Tejun Heo <tj@...nel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org,
	Linux-pm mailing list <linux-pm@...r.kernel.org>,
	stable@...r.kernel.org
Subject: Re: [PATCH] PCI: Add disabling pm async quirk for JMicron chips

On Sat, Jan 10, 2015 at 1:46 AM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> On Fri, Dec 05, 2014 at 02:18:40PM -0500, Alan Stern wrote:
>> On Fri, 5 Dec 2014, Chuansheng Liu wrote:
>>
>> You know, this is exactly why device_pm_wait_for_dev() exists -- so
>> that asynchronous power-management operations can wait for other
>> devices even when there's no parent-child relation.
>>
>> You should try to use device_pm_wait_for_dev() instead of disabling
>> async suspend/resume.
>
> Dropping this patch for now, waiting for a response to Alan's suggestion.

>From Alan's comments #106:
https://bugzilla.kernel.org/show_bug.cgi?id=81551#c106

It seems Chuansheng's patch is the best solution for now, so perhaps
it can be considered to be merged?

Regards,
Aaron
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