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Date: Tue, 27 May 1997 02:15:03 -0700 (PDT)
From: Joel.Faedi@esial.u-nancy.fr
To: freebsd-gnats-submit@FreeBSD.ORG
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Subject: kern/3696: kernel panic during wd hard disk probe if CMD640 is enabled
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>Number:         3696
>Category:       kern
>Synopsis:       kernel panic during wd hard disk probe if CMD640 is enabled
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May 27 02:20:00 PDT 1997
>Last-Modified:
>Originator:     ESIAL - Nancy (France)
>Organization:
>Release:        2.2.1 and 2.2.2 and above
>Environment:
FreeBSD meduse.scinfo.u-nancy.fr 2.2.1-RELEASE FreeBSD 2.2.1-RELEASE #0: Sun May 25 10:08:52 CEST 1997     faedi@meduse.scinfo.u-nancy.fr:/usr/src/sys/compile/MEDUSE  i386
>Description:
kernel panics while testing wd hard drive if "options CMD640" is activated and if you don't have wd1 connected (even if the controleris a CMD640 or not).
>How-To-Repeat:
compile a kernel with "options CMD640", put a single hard disk onyour first IDE controler, system panic while testing hard disks.
>Fix:
in file /usr/src/sys/i386/isa/wd.c, in function "wdattach", change the lines:-------------------------------------------------#ifdef CMD640
     wdtab[du->dk_ctrlr_cmd640].b_active = 2;
#else
      wdtab[dvp->id_unit].b_active = 2;
#endif-------------------------------------------------
by the lines:-------------------------------------------------
#ifdef CMD640
      if (eide_quirks & Q_CMD640B) {
        wdtab[PRIMARY].b_active = 2;
      } else {
        wdtab[dvp->id_unit].b_active = 2;
      }
#else
      wdtab[dvp->id_unit].b_active = 2;
#endif
-------------------------------------------------

>Audit-Trail:
>Unformatted: