linux-kernel - RE: [PATCH] usb: gadget: composite: enable BESL support

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Message-ID: <0C18FE92A7765D4EB9EE5D38D86A563A01CDED1E@SHSMSX103.ccr.corp.intel.com>
Date:	Wed, 29 Apr 2015 03:04:51 +0000
From:	"Du, Changbin" <changbin.du@...el.com>
To:	"balbi@...com" <balbi@...com>
CC:	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Cohen, David A" <david.a.cohen@...el.com>,
	"Wu, Hao" <hao.wu@...el.com>
Subject: RE: [PATCH] usb: gadget: composite: enable BESL support

> > From: Felipe Balbi <balbi@...com>
> > Date: Tue, 30 Sep 2014 16:08:03 -0500
> > Subject: [PATCH] usb: gadget: composite: enable BESL support
> 
> missing upstream commit.
> 
> > According to USB 2.0 ECN Errata for Link Power Management
> > (USB2-LPM-Errata-final.pdf), BESL must be enabled if LPM is enabled.
> >
> > This helps with USB30CV TD 9.21 LPM L1 Suspend Resume Test.
> >
> > Cc: <stable@...r.kernel.org> # 3.14
> 
> this should be backported all the way back to 3.1. The commit which this
> patch is fixing, was applied on v3.1, so we're probably going to backport to
> 3.10 and 3.14. When asking for backports, don't consider only your project,
> think about the kernel/stable releases as a whole.
> 
> BTW, that should be v3.1+, the + tells the Stable team that from v3.1 forward,
> all kernels need the backport.
> 
> > Signed-off-by: Felipe Balbi <balbi@...com>
> > Signed-off-by: Du, Changbin <changbin.du@...el.com>
> > ---
> > Hi,
> >
> > This patch was introduced on v3.18. However the issue fixed already
> > existed on
> > v3.14 and v3.14 is a long term support version.
> 
> the issue already existed on v3.1, why did you decide to backport only to
> v3.14 ?
> 
> > So propose to backport it over there as well.
> >
> --
> balbi

Thanks for pointing it out, Balbi. Sorry for not considering the whole trees. This
is my first time to send backport request and now know how do it well. I will
resend request with field updated.

Du, Changbin
Regards
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