From: Shawn Guo <shawnguo@kernel.org>
To: Po Liu <po.liu@nxp.com>
Cc: Roy Zang <roy.zang@nxp.com>, Arnd Bergmann <arnd@arndb.de>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Marc Zyngier <marc.zyngier@arm.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Stuart Yoder <stuart.yoder@nxp.com>,
"M.H. Lian" <minghuan.lian@nxp.com>,
Murali Karicheri <m-karicheri2@ti.com>,
Mingkai Hu <mingkai.hu@nxp.com>,
Bjorn Helgaas <bhelgaas@google.com>, Leo Li <leoyang.li@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v5 3/3] pci:aer: add support aer interrupt with none MSI/MSI-X/INTx mode
Date: Fri, 30 Sep 2016 15:13:24 -0700 [thread overview]
Message-ID: <20160930221323.GC2373@x250> (raw)
In-Reply-To: <VI1PR0401MB17090ED60A826FDCBFB8B33D92F60@VI1PR0401MB1709.eurprd04.prod.outlook.com>
On Wed, Sep 21, 2016 at 06:54:59AM +0000, Po Liu wrote:
> > > > Will the new kernel work with existing/old DTB? I'm trying to
> > > > understand the dependency between driver and DTS changes.
> > >
> > > Yes, We've never use name 'intr' before. So we remove it is ok.
> > > 'aer' is a dts name for researching it's true interrupt number by
> > kernel. This patch is first time to use name 'aer'. So it must be
> > compatible with existing/old DTB.
> >
> > Does that mean driver and DTS changes can go through separate trees, i.e.
> > PCI and arm-soc, without introducing regressions on either tree?
> > Or does the patch series needs to go in as a whole?
>
> Should be as a whole. The driver base on the dts. Or else, the driver would not found the 'aer' point.
Let me try to understand this one more time. So if the new kernel boots
with an existing DTB, the driver will fail to find 'aer' interrupt,
right? My question is that in this case, the driver will just stop
working or keep working in the same way as old kernel. The former case
is a regression which breaks old DTB support, and the latter is pretty
much like that we are adding a new support, and the DTS change can go
independently with driver part through different subsystem tree.
Hope I make my question clear this time.
Shawn
next prev parent reply other threads:[~2016-09-30 22:13 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-26 6:00 [PATCH 2/2] aer: add support aer interrupt with none MSI/MSI-X/INTx mode Po Liu
2016-06-02 3:48 ` Bjorn Helgaas
2016-06-02 5:01 ` Po Liu
2016-06-02 13:55 ` Bjorn Helgaas
2016-06-02 15:37 ` Murali Karicheri
2016-06-03 4:09 ` Bjorn Helgaas
2016-06-03 17:31 ` Murali Karicheri
2016-06-04 3:48 ` Bjorn Helgaas
2016-06-06 7:32 ` Po Liu
2016-06-06 14:01 ` Murali Karicheri
2016-06-06 18:10 ` Bjorn Helgaas
2016-06-07 10:07 ` Po Liu
2016-06-07 22:46 ` Bjorn Helgaas
2016-06-08 4:56 ` Po Liu
2016-06-14 6:12 ` [PATCH v2 1/2] nxp/dts: add pcie aer interrupt-name property in the dts Po Liu
2016-06-14 6:12 ` [PATCH v2 2/2] pci/aer: interrupt fixup in the quirk Po Liu
2016-06-16 13:54 ` Bjorn Helgaas
2016-06-17 3:30 ` Po Liu
2016-07-01 8:46 ` Po Liu
2016-06-14 8:24 ` [PATCH v3 1/2] nxp/dts: add pcie aer interrupt-name property in the dts Po Liu
2016-06-14 8:24 ` [PATCH v3 2/2] pci/aer: interrupt fixup in the quirk Po Liu
2016-06-23 5:43 ` Dongdong Liu
2016-07-01 8:40 ` Po Liu
2016-07-04 8:44 ` Dongdong Liu
2016-07-05 3:03 ` Po Liu
2016-07-06 8:38 ` Dongdong Liu
[not found] ` <1465892645-32381-2-git-send-email-po.liu-3arQi8VN3Tc@public.gmane.org>
2016-07-29 22:41 ` Bjorn Helgaas
2016-08-22 10:09 ` Po Liu
2016-09-20 20:47 ` Bjorn Helgaas
2016-09-21 6:51 ` Po Liu
2016-09-21 21:53 ` Bjorn Helgaas
2016-08-31 6:37 ` [PATCH v4 1/2] nxp/dts: add pcie aer interrupt-name property in the dts Po Liu
2016-08-31 6:37 ` [PATCH v4 2/2] pci:aer: add support aer interrupt with none MSI/MSI-X/INTx mode Po Liu
2016-09-02 15:17 ` Rob Herring
2016-09-05 6:05 ` Po Liu
2016-09-13 4:40 ` [PATCH v5 1/3] arm/dts: add pcie aer interrupt-name property in the dts Po Liu
2016-09-13 4:40 ` [PATCH v5 2/3] arm64/dts: " Po Liu
2016-09-13 4:40 ` [PATCH v5 3/3] pci:aer: add support aer interrupt with none MSI/MSI-X/INTx mode Po Liu
[not found] ` <1473741659-17618-3-git-send-email-po.liu-3arQi8VN3Tc@public.gmane.org>
2016-09-18 0:52 ` Shawn Guo
2016-09-18 3:37 ` Po Liu
[not found] ` <VI1PR0401MB1709F91B0C1EB6C80D741E4492F50-9IDQY6o3qQhWumToEB7uiI3W/0Ik+aLCnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2016-09-20 12:39 ` Shawn Guo
2016-09-21 6:54 ` Po Liu
2016-09-30 22:13 ` Shawn Guo [this message]
2016-09-23 13:06 ` Rob Herring
2016-09-26 8:25 ` Po Liu
2016-09-21 22:37 ` Bjorn Helgaas
2016-09-22 2:53 ` Po Liu
2016-09-30 9:11 ` [PATCH v6 1/3] arm/dts-ls1021: add pcie aer/pme interrupt-name property in the dts Po Liu
2016-09-30 9:11 ` [PATCH v6 2/3] arm64/dts-ls1043-ls2080: " Po Liu
2016-09-30 9:11 ` [PATCH v6 3/3] pci:add support aer/pme interrupts with none MSI/MSI-X/INTx mode Po Liu
[not found] ` <1475226697-7709-3-git-send-email-po.liu-3arQi8VN3Tc@public.gmane.org>
2016-10-08 20:49 ` Rob Herring
2016-10-09 2:47 ` Po Liu
2016-09-05 2:25 ` [PATCH v4 1/2] nxp/dts: add pcie aer interrupt-name property in the dts Shawn Guo
[not found] ` <1472625442-23309-1-git-send-email-po.liu-3arQi8VN3Tc@public.gmane.org>
2016-09-12 22:13 ` Bjorn Helgaas
2016-09-13 3:02 ` Po Liu
2016-06-16 0:36 ` [PATCH v3 " Shawn Guo
2016-06-16 10:50 ` Po Liu
2016-06-16 22:19 ` Rob Herring
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