diff options
| author | Brian Norris <briannorris@chromium.org> | 2022-10-29 04:45:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-09 14:36:19 +0300 |
| commit | ee9834636f9b07fe1dcf3fffbb325318cdb267d5 (patch) | |
| tree | f3fd2ddb664933bf9ce4509946013b1ef92468dc | |
| parent | 4567d1a97f5290cb895a564feff0a5c770d6c332 (diff) | |
| download | linux-ee9834636f9b07fe1dcf3fffbb325318cdb267d5.tar.xz | |
usb: ehci-pci: Set PROBE_PREFER_ASYNCHRONOUS
This driver often takes on the order of 8ms to start, but every little
bit counts. 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>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20221028184507.v2.1.I9a5353f81d1509f85f3a04f0cdc9099f6fe60811@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/ehci-pci.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 17f8b6ea0c35..4b148fe5e43b 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -411,11 +411,12 @@ static struct pci_driver ehci_pci_driver = { .remove = ehci_pci_remove, .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 ehci_pci_init(void) |