| Message ID | 20221028141821.2.I5a309231785d3a4e37118a25e84f5caa0136a343@changeid (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/2] usb: ehci-pci: Set PROBE_PREFER_ASYNCHRONOUS | expand |
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 40228a3d77a0..4da03de1be70 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -689,7 +689,8 @@ static struct pci_driver xhci_pci_driver = { .shutdown = usb_hcd_pci_shutdown, #ifdef CONFIG_PM .driver = { - .pm = &usb_hcd_pci_pm_ops + .pm = &usb_hcd_pci_pm_ops, + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, #endif };
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> --- drivers/usb/host/xhci-pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)