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Reduced maximum transfer size by one to allow for catching a too large
condition correctly. Do single block I/O if the size is too large.

Submitted by:	Bruce Evans
This commit is contained in:
David Greenman 1994-08-08 13:56:46 +00:00
parent 7d7bb69d41
commit e80859e4d6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=1948
1 changed files with 2 additions and 2 deletions
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4
sys/i386/isa/wd.c
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@ -37,7 +37,7 @@ static int wdtest = 0;
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.39 1994/05/25 09:00:19 rgrimes Exp $
* $Id: wd.c,v 1.40 1994/08/08 13:53:33 davidg Exp $
*/
/* TODO:
@ -86,7 +86,7 @@ static int wdtest = 0;
#define TIMEOUT 10000
#define RETRIES 5 /* number of retries before giving up */
#define RECOVERYTIME 500000 /* usec for controller to recover after err */
#define MAXTRANSFER 255 /* max size of transfer in sectors */
#define MAXTRANSFER 255 /* max size of transfer in sectors */
/* correct max is 256 but some controllers */
/* can't handle that in all cases */
#define BAD144_NO_CYL 0xffff /* XXX should be in dkbad.h; bad144.c uses -1 */