xhci: Add update_hub_device override for PCI xHCI hosts
stable inclusion from stable-v5.10.165 commit 83e3a5be7475c4b1670b4f3a57728287077cec9e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7T7G4 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=83e3a5be7475c4b1670b4f3a57728287077cec9e -------------------------------- commit 23a3b8d5 upstream. Allow PCI hosts to check and tune roothub and port settings before the hub is up and running. This override is needed to turn off U1 and U2 LPM for some ports based on per port ACPI _DSM, _UPC, or possibly vendor specific mmio values for Intel xHC hosts. Usb core calls the host update_hub_device once it creates a hub. Entering U1 or U2 link power save state on ports with this limitation will cause link to fail, turning the usb device unusable in that setup. Cc: stable@vger.kernel.org Signed-off-by:Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20230116142216.1141605-5-mathias.nyman@linux.intel.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
sanglipeng <sanglipeng1@jd.com> Conflicts: drivers/usb/host/xhci-pci.c
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