fix for: kern/97: wt DELAY patch

Wangtek PC-02 QIC-02 controller with Cipher 150MB tape drive

        Any attemp to open /dev/rwt0 hangs.

        The following patch to /sys/i386/isa/wt.c is derived from Mikael
Hybsch's wt driver.

Submitted by:	Terry Lee <terry@uivlsi.csl.uiuc.edu>
This commit is contained in:
Joerg Wunsch 1995-01-09 17:55:10 +00:00
parent 2563fac568
commit b324392f6b
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=5457

View File

@ -19,7 +19,7 @@
* the original CMU copyright notice.
*
* Version 1.3, Thu Nov 11 12:09:13 MSK 1993
* $Id: wt.c,v 1.12 1994/10/23 21:27:42 wollman Exp $
* $Id: wt.c,v 1.13 1994/10/25 08:57:39 swallace Exp $
*
*/
@ -926,6 +926,7 @@ static int wtstatus (wtinfo_t *t)
outb (t->CTLPORT, t->REQUEST | t->ONLINE); /* set request */
wtpoll (t, t->BUSY, 0); /* wait for not ready */
DELAY(20);
outb (t->CTLPORT, t->ONLINE); /* unset request */
}
splx(x);