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usb: xhci-pci: Set PROBE_PREFER_ASYNCHRONOUS

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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: Brian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20221028184507.v2.2.I5a309231785d3a4e37118a25e84f5caa0136a343@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Brian Norris 2022-10-28 18:45:35 -07:00 • committed by Greg Kroah-Hartman
parent ee9834636f
commit 4c2604a9a6
1 changed files with 4 additions and 3 deletions
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7
drivers/usb/host/xhci-pci.c
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@ -673,11 +673,12 @@ static struct pci_driver xhci_pci_driver = {
/* suspend and resume implemented later */ /* suspend and resume implemented later */
.shutdown = usb_hcd_pci_shutdown, .shutdown = usb_hcd_pci_shutdown,
#ifdef CONFIG_PM
.driver = { .driver = {
.pm = &usb_hcd_pci_pm_ops #ifdef CONFIG_PM
}, .pm = &usb_hcd_pci_pm_ops,
#endif #endif
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
}; };
static int __init xhci_pci_init(void) static int __init xhci_pci_init(void)