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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2022-11-30 11:19:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-30 12:10:48 +0100 |
| commit | c3bbacd61baace2f4fbab17012c3d149df2d50f1 (patch) | |
| tree | b1413d567bc489a78559d2444619aba1fe8c4a93 /include/linux/usb | |
| parent | 705c333a7ad2003ad99d96c19a31619b19ad14b9 (diff) | |
| download | linux-stable-c3bbacd61baace2f4fbab17012c3d149df2d50f1.tar.gz linux-stable-c3bbacd61baace2f4fbab17012c3d149df2d50f1.tar.bz2 linux-stable-c3bbacd61baace2f4fbab17012c3d149df2d50f1.zip | |
xhci: disable U3 suspended ports in S4 hibernate poweroff_late stage
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>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/hcd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 78cd566ee238..b51c07111729 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -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); |