Bjorn Helgaas <helgaas@xxxxxxxxxx> writes: > On Fri, Mar 16, 2018 at 01:55:36PM +0100, Christian Zigotzky wrote: >> Bjorn Helgaas created a patch for making PCI_SCAN_ALL_PCIE_DEVS work for >> Root Ports as well as Downstream. Previously PCI_SCAN_ALL_PCIE_DEVS (set by >> quirks or the "pci=pcie_scan_all" >> kernel parameter) only affected Switch Downstream Ports, not Root Ports. The >> problem is, that we have to add always the boot argument "pci=pcie_scan_all" >> for using Bjorn's improvements. Without the boot argument >> "pci=pcie_scan_all", the kernel doesn't boot on P.A. Semi boards with SB600 >> chipset (SB600 chipset is connected via PCIe x4 to the P.A. Semi’s >> PA6T-1682M System-on-a-Chip) because the kernel can't find any drives >> connected to the SB600 anymore. Olof Johansson has created a patch for >> executing "pci=pcie_scan_all" automatically on P.A. Semi boards. With his >> patch, we don't need to add 'pci=pcie_scan_all' to the kernel boot arguments >> anymore. > > The patch looks fine, but I need a signed-off-by line before I can apply > it. See https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst I'm happy to take it, I've been meaning to check if Olof sent a SOB in his original mail but haven't got to it. ... Yes, he did, see below. So I'll merge that, I'll add a Tested-by for you Christian. Christian please don't remove any of the tags when submitting other peoples' patches in future. cheers >From a3b390277627b0342c8ccfc16e58679e0d8abdde Mon Sep 17 00:00:00 2001 From: Olof Johansson <olof@xxxxxxxxx> Date: Sat, 2 Dec 2017 14:56:36 -0800 Subject: [PATCH] powerpc/pasemi: set PCI_SCAN_ALL_PCI_DEVS Needed on Amiga X1000 with SB600. Reported-by: Christian Zigotzky <chzigotzky@xxxxxxxxxxx> Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Signed-off-by: Olof Johansson <olof@xxxxxxxxx> --- arch/powerpc/platforms/pasemi/pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c index 5ff6108..ea54ed2 100644 --- a/arch/powerpc/platforms/pasemi/pci.c +++ b/arch/powerpc/platforms/pasemi/pci.c @@ -224,6 +224,8 @@ void __init pas_pci_init(void) return; } + pci_set_flag(PCI_SCAN_ALL_PCIE_DEVS): + for (np = NULL; (np = of_get_next_child(root, np)) != NULL;) if (np->name && !strcmp(np->name, "pxp") && !pas_add_bridge(np)) of_node_get(np);