Re: [PATCH v2] PCI: dwc: fix enumeration end when reaching root subordinate

From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Fabio Estevam <festevam@gmail.com>
Cc: Koen Vandeputte <koen.vandeputte@ncentric.com>,
	linux-pci@vger.kernel.org,
	Binghui Wang <wangbinghui@hisilicon.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Jesper Nilsson <jesper.nilsson@axis.com>,
	Jianguo Sun <sunjianguo1@huawei.com>,
	Jingoo Han <jingoohan1@gmail.com>,
	Kishon Vijay Abraham I <kishon@ti.com>,
	Lucas Stach <l.stach@pengutronix.de>,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	Minghuan Lian <minghuan.Lian@freescale.com>,
	Mingkai Hu <mingkai.hu@freescale.com>,
	Murali Karicheri <m-karicheri2@ti.com>,
	Pratyush Anand <pratyush.anand@gmail.com>,
	Richard Zhu <hongxing.zhu@nxp.com>,
	Roy Zang <tie-fei.zang@freescale.com>,
	Shawn Guo <shawn.guo@linaro.org>,
	Stanimir Varbanov <svarbanov@mm-sol.com>,
	Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
	Xiaowei Song <songxiaowei@hisilicon.com>,
	Zhou Wang <wangzhou1@hisilicon.com>,
	Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Subject: Re: [PATCH v2] PCI: dwc: fix enumeration end when reaching root subordinate
Date: Mon, 5 Mar 2018 12:24:40 +0000	[thread overview]
Message-ID: <20180305122440.GA29780@e107981-ln.cambridge.arm.com> (raw)
In-Reply-To: <CAOMZO5CFXBciQBOpPDtZc9L48d5Y3zubCK8M=HWo+owEOTQkrQ@mail.gmail.com>

On Mon, Mar 05, 2018 at 08:55:43AM -0300, Fabio Estevam wrote:
> Hi Lorenzo,
> 
> On Mon, Mar 5, 2018 at 6:49 AM, Lorenzo Pieralisi
> <lorenzo.pieralisi@arm.com> wrote:
> 
> > It is a balance of urgency and making sure it is extensively tested -
> > I'd prefer it to go via usual release cycle (and -next) and then it will
> > trickle into stable kernels, let me know if that's not OK.
> >
> > I would understand your point if dwc maintainers were more proactive
> > in testing their respective controllers - all of them should be affected
> > by this fix but I have just heard from a few of them.
> 
> We got this patch tested by: Koen, myself, Sebastian and the folks at
> Pengutronix.
> 
> Looks like a decent amount of testing IMHO.

IIUC you all tested the same dwc host bridge variant (ie imx6) - I want
to understand if it works across dwc variants because this patch affects
them all.

> In this case I would prefer that we could fix the regression into
> 4.16-rc cycle rather than waiting until 4.17.

I will decide what to do shortly - I would really appreciate if other
dwc host bridge maintainers (that are CC'ed) can share the testing effort.

Thanks,
Lorenzo