Commit 4c2604a9 authored by Brian Norris's avatar Brian Norris Committed by Greg Kroah-Hartman
Browse files

usb: xhci-pci: Set PROBE_PREFER_ASYNCHRONOUS 



This driver often takes on the order of 10ms to start, but in some cases
takes more than 100ms. It shouldn't have many cross-device dependencies
to race with, nor racy access to shared state with other drivers, so
this should be a relatively low risk change.

This driver was pinpointed as part of a survey of top slowest initcalls
(i.e., are built in, and probing synchronously) on a lab of ChromeOS
systems.

Signed-off-by: default avatarBrian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20221028184507.v2.2.I5a309231785d3a4e37118a25e84f5caa0136a343@changeid


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ee983463

drivers/usb/host/xhci-pci.c

+4 −3
Original line number Diff line number Diff line
@@ -673,11 +673,12 @@ static struct pci_driver xhci_pci_driver = { 
	/* suspend and resume implemented later */



	.shutdown = 	usb_hcd_pci_shutdown,

#ifdef CONFIG_PM

	.driver = {

		.pm = &usb_hcd_pci_pm_ops

	},

#ifdef CONFIG_PM

		.pm = &usb_hcd_pci_pm_ops,

#endif

		.probe_type = PROBE_PREFER_ASYNCHRONOUS,

	},

};



static int __init xhci_pci_init(void)