CVS commit: [netbsd-10] src/sys/dev/usb

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Wed Feb 22 13:06:42 UTC 2023

Modified Files:
        src/sys/dev/usb [netbsd-10]: ucom.c

Log Message:
Pull up following revision(s) (requested by riastradh in ticket #92):

        sys/dev/usb/ucom.c: revision 1.136
        sys/dev/usb/ucom.c: revision 1.135

ucom(4): Nix broken error branch.

This error branch was introduced to make the system act, when a USB
serial adapter is yanked, as if the other end had spat out a line
feed in an attempt to wake any sleeping readers so they will stop
using the USB serial port.

This is no longer necessary, because ttycancel will wake them anyway,
and it is actually harmful because it puts stuff in the output queue
(CR LF) that will never be processed, causing subsequent users to
hang trying to open the device.

Problem found and patch tested by tih@.

ucom(4): Missed a spot in previous -- nix now-unused local.


To generate a diff of this commit:
cvs rdiff -u -r1.134 -r1.134.2.1 src/sys/dev/usb/ucom.c

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