CVS commit: [netbsd-8] src/sys/dev/isa

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

Module Name:    src
Committed By:   martin
Date:           Sat May  5 15:08:15 UTC 2018

Modified Files:
        src/sys/dev/isa [netbsd-8]: wbsio.c

Log Message:
Pull up following revision(s) (requested by yamaguchi in ticket #789):

        sys/dev/isa/wbsio.c: revision 1.24

Use spin mutex to fix a panic

The GPIO part of wbsio(4) has a lock to keep the register access
order. In addition to the lock, gpio(4) has a look to prevent
multiple control through gpio_pin_ctl(). Those locks hold at
once when gpio_pin_ctl() is called, and the lock of gpio(4) hold
before that of wbsio(4).

Therefore, the wbsio(4) has to use spin lock if gpio(4) uses
spin lock.


To generate a diff of this commit:
cvs rdiff -u -r1.10.10.3 -r1.10.10.4 src/sys/dev/isa/wbsio.c

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