mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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: 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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/host/xhci-pci.c
View File

@ -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)