Hi Shawn, > -----Original Message----- > From: Shawn Guo [mailto:shawnguo@xxxxxxxxxx] > Sent: Tuesday, September 20, 2016 8:39 PM > To: Po Liu > Cc: linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; Roy Zang; Arnd > Bergmann; Marc Zyngier; Stuart Yoder; Leo Li; M.H. Lian; Murali > Karicheri; Bjorn Helgaas; Mingkai Hu > Subject: Re: [PATCH v5 3/3] pci:aer: add support aer interrupt with none > MSI/MSI-X/INTx mode > > On Sun, Sep 18, 2016 at 03:37:27AM +0000, Po Liu wrote: > > Hi Shawn, > > > > > > > -----Original Message----- > > > From: Shawn Guo [mailto:shawnguo@xxxxxxxxxx] > > > Sent: Sunday, September 18, 2016 8:52 AM > > > To: Po Liu > > > Cc: linux-pci@xxxxxxxxxxxxxxx; > > > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > > > linux-kernel@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; Roy Zang; > > > Arnd Bergmann; Marc Zyngier; Stuart Yoder; Leo Li; M.H. Lian; > > > Murali Karicheri; Bjorn Helgaas; Mingkai Hu > > > Subject: Re: [PATCH v5 3/3] pci:aer: add support aer interrupt with > > > none MSI/MSI-X/INTx mode > > > > > > On Tue, Sep 13, 2016 at 12:40:59PM +0800, Po Liu wrote: > > > > On some platforms, root port doesn't support MSI/MSI-X/INTx in RC > mode. > > > > When chip support the aer interrupt with none MSI/MSI-X/INTx > > > mode, > maybe there is interrupt line for aer pme etc. Search the > > > interrupt > number in the fdt file. Then fixup the dev->irq with it. > > > > > > > > Signed-off-by: Po Liu <po.liu@xxxxxxx> > > > > > > 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. Thanks! Po > > Shawn ��.n��������+%������w��{.n�����{���"�)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
