CVS commit: src/sys

["Nick Hudson" <skrll%netbsd.org@localhost>]

Module Name:    src
Committed By:   skrll
Date:           Sun Aug 14 14:42:22 UTC 2016

Modified Files:
        src/sys/dev/usb: ehci.c ohci.c usb.c usbdi.h
        src/sys/external/bsd/dwc2: dwc2.c

Log Message:
Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.

Should fix/help
kern/49065 - ifconfig tun0 ... sequence locks up system / lockup: softnet_lock held across usb xfr
kern/50491 - unkillable wait in usbd_transfer while using usmsc0 on raspberry pi 2
kern/51395 - USB Ethernet makes xhci hang

and probably others


To generate a diff of this commit:
cvs rdiff -u -r1.252 -r1.253 src/sys/dev/usb/ehci.c
cvs rdiff -u -r1.263 -r1.264 src/sys/dev/usb/ohci.c
cvs rdiff -u -r1.163 -r1.164 src/sys/dev/usb/usb.c
cvs rdiff -u -r1.91 -r1.92 src/sys/dev/usb/usbdi.h
cvs rdiff -u -r1.43 -r1.44 src/sys/external/bsd/dwc2/dwc2.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.