Re: [PATCH 1/2] PCI: Setup bridge resources earlier

Bjorn Helgaas
2025-10-17T18:52:48Z

On Fri, Oct 17, 2025 at 11:52:58PM +0530, Bhanu Seshu Kumar Valluri wrote:
> Hi,
>
> I want to report that this PATCH also break PCI RC port on TI-AM64-EVM.
>
> I did git bisect and it pointed to the a43ac325c7cb ("PCI: Set up bridge resources earlier")
>
> Happy to help if any testing or logs are required.

Thanks for the report! Can you test this patch?

https://patch.msgid.link/20251014163602.17138-1-ilpo.jarvinen@linux.intel.com

That patch is queued up as
https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/commit/?id=469276c06aff
and should appear in v6.18-rc2 on Sunday if all goes well.

If that doesn't work, let us know and we'll debug this further.

> echo 1 > /sys/bus/pci/rescan
> [ 37.170389] pci 0000:01:00.0: [104c:b010] type 00 class 0xff0000 PCIe Endpoint
> [ 37.177781] pci 0000:01:00.0: BAR 0 [mem 0x00000000-0x0000ffff]
> [ 37.183808] pci 0000:01:00.0: BAR 1 [mem 0x00000000-0x000001ff]
> [ 37.189843] pci 0000:01:00.0: BAR 2 [mem 0x00000000-0x000003ff]
> [ 37.195802] pci 0000:01:00.0: BAR 3 [mem 0x00000000-0x00003fff]
> [ 37.201768] pci 0000:01:00.0: BAR 4 [mem 0x00000000-0x0001ffff]
> [ 37.207715] pci 0000:01:00.0: BAR 5 [mem 0x00000000-0x000fffff]
> [ 37.214040] pci 0000:01:00.0: supports D1
> [ 37.218083] pci 0000:01:00.0: PME# supported from D0 D1 D3hot
> [ 37.231890] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: assigned
> [ 37.242890] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: can't assign; no space
> [ 37.251216] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: failed to assign
> [ 37.258309] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: can't assign; no space
> [ 37.265851] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: failed to assign
> [ 37.272896] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: can't assign; no space
> [ 37.280439] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: failed to assign
> [ 37.287459] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: can't assign; no space
> [ 37.294986] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: failed to assign
> [ 37.302011] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: can't assign; no space
> [ 37.309536] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: failed to assign
> [ 37.316595] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: releasing
> [ 37.323541] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: assigned
> [ 37.330400] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: can't assign; no space
> [ 37.337956] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: failed to assign
> [ 37.344960] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: can't assign; no space
> [ 37.352550] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: failed to assign
> [ 37.359578] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: can't assign; no space
> [ 37.367152] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: failed to assign
> [ 37.374192] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: can't assign; no space
> [ 37.381709] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: failed to assign
> [ 37.388720] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: can't assign; no space
> [ 37.396246] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: failed to assign
> [ 37.403795] pcieport 0000:00:00.0: of_irq_parse_pci: failed with rc=-22
> [ 37.410513] pci-endpoint-test 0000:01:00.0: enabling device (0000 -> 0002)
> [ 37.417796] pci-endpoint-test 0000:01:00.0: Cannot perform PCI test without BAR0
>
>
> Regards,
> Bhanu Seshu Kumar Valluri