From mboxrd@z Thu Jan 1 00:00:00 1970 From: robh@kernel.org (Rob Herring) Date: Fri, 2 Sep 2016 10:17:25 -0500 Subject: [PATCH v4 2/2] pci:aer: add support aer interrupt with none MSI/MSI-X/INTx mode In-Reply-To: <1472625442-23309-2-git-send-email-po.liu@nxp.com> References: <1465892645-32381-2-git-send-email-po.liu@nxp.com> <1472625442-23309-1-git-send-email-po.liu@nxp.com> <1472625442-23309-2-git-send-email-po.liu@nxp.com> Message-ID: <20160902151725.GA25273@rob-hp-laptop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Aug 31, 2016 at 02:37:22PM +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 > --- > Changes for v4: > - re-use the patch changes in the root port driver; > - add binding information; > > .../devicetree/bindings/pci/layerscape-pci.txt | 4 +-- > drivers/pci/pcie/portdrv_core.c | 31 +++++++++++++++++++--- > 2 files changed, 30 insertions(+), 5 deletions(-) > > diff --git a/Documentation/devicetree/bindings/pci/layerscape-pci.txt b/Documentation/devicetree/bindings/pci/layerscape-pci.txt > index 41e9f55..1dfb1da 100644 > --- a/Documentation/devicetree/bindings/pci/layerscape-pci.txt > +++ b/Documentation/devicetree/bindings/pci/layerscape-pci.txt > @@ -19,7 +19,7 @@ Required properties: > - interrupts: A list of interrupt outputs of the controller. Must contain an > entry for each entry in the interrupt-names property. > - interrupt-names: Must include the following entries: > - "intr": The interrupt that is asserted for controller interrupts > + "aer": The interrupt that is asserted for aer interrupts You can't just change this. That breaks compatibility with old dts files. Plus, it is just a name. Why does it even matter? Not to mention having the name for a single irq is a bit pointless. Rob