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Date:   Sun, 16 Jul 2023 16:58:58 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Bagas Sanjaya <bagasdotme@gmail.com>
Cc:     Alexander Stein <alexander.stein@ew.tq-group.com>,
        Sasha Levin <sashal@kernel.org>,
        Tomasz Rostanski <tomasz.rostanski@thalesgroup.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Regressions <regressions@lists.linux.dev>,
        Linux Stable <stable@vger.kernel.org>,
        Linux USB <linux-usb@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: Fwd: dwc3: regression in USB DWC3 driver in kernel 5.15 branch
Message-ID: <2023071638-extrovert-batting-1f93@gregkh>
References: <bfee63a3-16ee-0061-94c0-9c9af5318634@gmail.com>
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On Sat, Jul 15, 2023 at 06:03:06PM +0700, Bagas Sanjaya wrote:
> Hi,
> 
> I notice a stable-specific regression on Bugzilla [1]. Quoting from it:
> 
> > The backport commit to 5.15 branch:
> > 9d4f84a15f9c9727bc07f59d9dafc89e65aadb34 "arm64: dts: imx8mp: Add snps,gfladj-refclk-lpm-sel quirk to USB nodes"  (from upstream commit 5c3d5ecf48ab06c709c012bf1e8f0c91e1fcd7ad)
> > switched from "snps,dis-u2-freeclk-exists-quirk" to "snps,gfladj-refclk-lpm-sel-quirk".
> > 
> > The problem is that the gfladj-refclk-lpm-sel-quirk quirk is not implemented / backported to 5.15 branch.
> > 
> > This commit should be either reverted, or the commit introducing gfladj-refclk-lpm-sel-quirk needs to be merged to 5.15 kernel branch.
> > 
> > As a result of this patch, on Gateworks Venice GW7400 revB board the USB 3.x devices which are connected to the USB Type C port does not enumerate and the following errors are generated:
> > 
> > [   14.906302] xhci-hcd xhci-hcd.0.auto: Timeout while waiting for setup device command
> > [   15.122383] usb 2-1: device not accepting address 2, error -62
> > [   25.282195] xhci-hcd xhci-hcd.0.auto: Abort failed to stop command ring: -110
> > [   25.297408] xhci-hcd xhci-hcd.0.auto: xHCI host controller not responding, assume dead
> > [   25.305345] xhci-hcd xhci-hcd.0.auto: HC died; cleaning up
> > [   25.311058] xhci-hcd xhci-hcd.0.auto: Timeout while waiting for stop endpoint command
> > [   25.334361] usb usb2-port1: couldn't allocate usb_device
> > 
> > When the commit is reverted the USB 3.x drives works fine.
> 
> See Bugzilla for the full thread and attach dmesgs.
> 
> Anyway, I'm adding it to regzbot:
> 
> #regzbot introduced: 9d4f84a15f9c97 https://bugzilla.kernel.org/show_bug.cgi?id=217670
> #regzbot title: regression in USB DWC3 driver due to missing gfladj-refclk-lpm-sel-quirk quirk

This isn't helpful as I don't know what commit eactly this missing
quirk is :(