Thank you very much for response. I have worked around the failure by manually allocating bus number, and memory bar window for a specific downstream port. I will send you the logs when I get back to this issue again. Thank you very much for response. On Fri, Jul 22, 2016 at 2:17 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > On Fri, Jul 15, 2016 at 1:33 PM, Kallol Biswas <kallol@xxxxxxxxxxxxxx> wrote: >> Hi, >> I have been trying to hot-add a PCIe bridge and getting the >> following message in dmesg: >> >> No bus number available for hot-added bridge 0000:06:00. >> >> The kernel is 4.4. Do we have any patch for this? I tried Yinghai's >> for-pci-busn-alloc patch. Did not work. Not sure I picked up the right >> changes. >> >> Any input... >> >> [ 794.085909] pci 0000:06:00.0: [10b5:9797] type 01 class 0x060400 >> [ 794.086232] pci 0000:06:00.0: Max Payload Size set to 256 (was 128, max 512) >> [ 794.086563] pci 0000:06:00.0: PME# supported from D0 D3hot D3cold >> [ 794.086884] iommu: Adding device 0000:06:00.0 to group 47 >> [ 794.093797] No bus number available for hot-added bridge 0000:06:00.0 > > > Can you please send out the whole boot log with > CONFIG_PCI_DEBUG=y ? > > also output for lspci -tv and lspci -vvxxx. > > Thanks > > Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html