CVS commit: src/sys/dev/usb

["Andreas Gustafsson" <gson%netbsd.org@localhost>]

Module Name:    src
Committed By:   gson
Date:           Sat Jun  6 13:53:43 UTC 2020

Modified Files:
        src/sys/dev/usb: if_run.c if_runvar.h

Log Message:
Conditionally enable the formerly #if'ed-out code to use the
WRITE_REGION_1 command for writing blocks of data to the device.
This is to address a performance issue where "ifconfig run0 up" would
take as long as 20-30 seconds when using a UHCI or OHCI host
controller due to the large number of control transfers performed by
the driver in combination with the inability of those host controllers
to perform multiple control transfers per USB frame.  Limit the
transfers to 64 bytes as in the corresponding #if'ed-out code in
FreeBSD.  Currently only enabled for mac_ver 0x5390 as it is the only
version tested so far.


To generate a diff of this commit:
cvs rdiff -u -r1.39 -r1.40 src/sys/dev/usb/if_run.c
cvs rdiff -u -r1.8 -r1.9 src/sys/dev/usb/if_runvar.h

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