The branch stable/13 has been updated by hselasky:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=1069b3b514219b0619a6c18b456b379f8aed5910

commit 1069b3b514219b0619a6c18b456b379f8aed5910
Author:     Hans Petter Selasky <[email protected]>
AuthorDate: 2022-06-09 13:15:49 +0000
Commit:     Hans Petter Selasky <[email protected]>
CommitDate: 2022-10-12 15:53:22 +0000

    usb(4): Make sure the enumeration thread doesn't loop too fast.
    
    Sponsored by:   NVIDIA Networking
    
    (cherry picked from commit 55a3bd000d9799f431c207e359466484ac63c137)
---
 sys/dev/usb/controller/usb_controller.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/dev/usb/controller/usb_controller.c 
b/sys/dev/usb/controller/usb_controller.c
index fd9bcd5ee524..8705c2849e4e 100644
--- a/sys/dev/usb/controller/usb_controller.c
+++ b/sys/dev/usb/controller/usb_controller.c
@@ -416,6 +416,9 @@ usb_bus_explore(struct usb_proc_msg *pm)
 #if USB_HAVE_ROOT_MOUNT_HOLD
        usb_root_mount_rel(bus);
 #endif
+
+       /* Nice the enumeration a bit, to avoid looping too fast. */
+       usb_pause_mtx(&bus->bus_mtx, USB_MS_TO_TICKS(16));
 }
 
 /*------------------------------------------------------------------------*

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