This issue also happens with a v4.1-rc3 kernel.
Code in drivers/pci/setup-res.c:
/*
* If we failed to assign anything, let's try the address
* where firmware left it. That at least has a chance of
* working, which is better than just leaving it disabled.
*/
if (ret < 0) {
dev_info(&dev->dev, "BAR %d: no space for %pR\n", resno, res);
ret = pci_revert_fw_address(res, dev, resno, size);
}
if (ret < 0) {
dev_info(&dev->dev, "BAR %d: failed to assign %pR\n", resno,
res);
return ret;
}
If we do the following we can see which PCI ids failed:
for i in $(dmesg | grep 'BAR 13: failed' | awk '{print $4}' | uniq |
sort | uniq); do lspci | grep ${i%%:}; done
0001:00:00.0 PCI bridge: IBM Device 03dc
0001:01:00.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI
Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:02:01.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI
Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:02:08.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI
Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:02:09.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI
Express Gen 3 (8.0 GT/s) Switch (rev ca)
0003:00:00.0 PCI bridge: IBM Device 03dc
0003:01:00.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:08.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:09.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:10.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:11.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
However we see all other BAR #'s allocate with no issues. It only seems
to be 13 that fails.
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https://bugs.launchpad.net/bugs/1426216
Title:
pci driver messages - BAR 13: no space for
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