On 4/16/25 05:40 PM, pgnd wrote:
If I turn off CONFIG_PCI_REALLOC_ENABLE_AUTO then all my USB devices behave.
But with CONFIG_PCI_REALLOC_ENABLE_AUTO=y then some of my USB controllers are
broken.
fwiw, you should be able to toggle that on cmd line, as well:
"
[ ] Enable PCI resource re-allocation detection
Symbol: CONFIG_PCI_REALLOC_ENABLE_AUTO
Help: Say Y here if you want the PCI core to detect if PCI resource
re-allocation needs to be enabled. You can always use
pci=realloc=on
or pci=realloc=off to override it. Note this feature is a no-op
unless PCI_IOV support is also enabled; in that case it will
automatically re-allocate PCI resources if SR-IOV BARs have not
been allocated by the BIOS.
When in doubt, say N.
"
Thanks for the tip! That indeed works too. I am now running the official
Fedora 6.14.2-300.fc42.x86_64 kernel with pci=realloc=off on the cmdline, and
all the USB controllers come up.
Steve
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