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

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

Module Name:    src
Committed By:   martin
Date:           Tue Mar  7 19:52:02 UTC 2023

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

Log Message:
Pull up following revision(s) (requested by thorpej in ticket #113):

        sys/dev/usb/ucom.c: revision 1.137

In the HUP-wait path in ucomopen():
- Use cv_timedwait() rather than cv_timedwait_sig(); the wait here is
 bounded (and fairly short besides) and seems appropriate to treat like
 other uninterruptible waits.  The behavior is now consistent with com(4)
 in this regard.
- Map EWOULDBLOCK return from cv_timedwait() to 0, as the successful passage
 of time is not an error in this case.
- If the HUP-wait time has passed, clear the HUP-wait timestamp.

PR kern/57259 (although insufficient -- another change to vfs_syscalls.c
is required)


To generate a diff of this commit:
cvs rdiff -u -r1.134.2.1 -r1.134.2.2 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.