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xhci: disable U3 suspended ports in S4 hibernate poweroff_late stage

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Disable U3 suspended ports in hibernate S4 poweroff_late for systems
with XHCI_RESET_TO_DEFAULT quirk, if wakeup is not enabled.

This reduces the number of self-powered usb devices from surviving in
U3 suspended state into next reboot.

Bootloader/firmware on these systems can't handle usb ports in U3, and
will timeout, causing extra delay during reboot/restore from S4.

Add pci_poweroff_late() callback to struct usb_hcd to get this done at
the correct stage in hibernate.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20221130091944.2171610-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman
2022-11-30 11:19:42 +02:00
committed by Greg Kroah-Hartman
parent 705c333a7a
commit c3bbacd61b
3 changed files with 68 additions and 0 deletions
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3
include/linux/usb/hcd.h
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@@ -269,6 +269,9 @@ struct hc_driver {
/* called after entering D0 (etc), before resuming the hub */
int (*pci_resume)(struct usb_hcd *hcd, bool hibernated);
/* called just before hibernate final D3 state, allows host to poweroff parts */
int (*pci_poweroff_late)(struct usb_hcd *hcd, bool do_wakeup);
/* cleanly make HCD stop writing memory and doing I/O */
void (*stop) (struct usb_hcd *hcd);