Hi, commit 64f55156f7adedb1ac5bb9cdbcbc9ac05ff5a724 upstream
The requested patch allows the iwlwifi driver to work with newer AX200 wifi cards when MSI-X interrupts are not available. Without it, bringing an interface "up" fails with a Microcode SW error. Xen PCI passthrough with a linux stubdom doesn't enable MSI-X which triggers this condition. I think it's only applicable to 5.4 because it's in 5.10 and earlier kernels don't have AX200 support. I'm making this request to stable and CC-ing netdev since I saw a message [1] on netdev saying: """ We're actually experimenting with letting Greg take networking patches into stable like he does for every other tree. If the patch doesn't appear in the next stable release please poke stable@ directly. """ Thanks, Jason [1] https://lore.kernel.org/netdev/20210129193030.46ef3...@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com/
