linux-kernel - RE: [PATCH] PCI: Do not enable async suspend for JMicron chips

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Date:	Thu, 6 Nov 2014 01:48:06 +0000
From:	"Liu, Chuansheng" <chuansheng.liu@...el.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Barto <mister.freeman@...oste.net>,
	"Tejun Heo (tj@...nel.org)" <tj@...nel.org>
CC:	"Lu, Aaron" <aaron.lu@...el.com>, Tejun Heo <tj@...nel.org>,
	"Rafael Wysocki" <rjw@...ysocki.net>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] PCI: Do not enable async suspend for JMicron chips

Hello Bjorn,

> -----Original Message-----
> From: Bjorn Helgaas [mailto:bhelgaas@...gle.com]
> Sent: Thursday, November 06, 2014 3:04 AM
> To: Barto
> Cc: Liu, Chuansheng; Lu, Aaron; Tejun Heo; Rafael Wysocki;
> linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH] PCI: Do not enable async suspend for JMicron chips
> 
> On Wed, Nov 5, 2014 at 11:46 AM, Barto <mister.freeman@...oste.net>
> wrote:
> > this patch solves these 2 bug reports :
> >
> > https://bugzilla.kernel.org/show_bug.cgi?id=84861
> >
> > https://bugzilla.kernel.org/show_bug.cgi?id=81551
> 
> Those bugs were already mentioned.  But e6b7e41cdd8c claims to solve
> https://bugzilla.kernel.org/show_bug.cgi?id=81551, and 84861 is a
> duplicate of 81551, so it should also be fixed by e6b7e41cdd8c.
> 
> So the question is, why was e6b7e41cdd8c insufficient?  Presumably it
> was tested and somebody thought it did fix the problem.

The first patch e6b7e41cdd8c which is just exclude some of JMicron chips(363/361) out of async_suspend,
then Barto found the same issue on JMicron 368, so we need one more general patch to let JMicron chips
out of async_suspend, so we make this patch.

Bjorn, tj,
Could you kindly take this patch? As Barto said, it effected the user experience indeed, thanks.