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When single stepping, only leave ENBUSFREE enabled

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if it was already enabled.  We don't want to set it
when it shouldn't be set, we just don't want to
inadvertantly turn it off.  This should fix a recent
report of the aic7xxx driver repeatedly complaining of
"unexpected busfree while idle" in one configuration.
This commit is contained in:
Justin T. Gibbs 2003-06-06 23:53:39 +00:00
parent 176b648e01
commit 71b2757314
2 changed files with 4 additions and 4 deletions
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4
sys/dev/aic7xxx/aic79xx.c
View File

@ -37,7 +37,7 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#197 $
* $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#198 $
*
* $FreeBSD$
*/
@ -2199,7 +2199,7 @@ ahd_clear_critical_section(struct ahd_softc *ahd)
ahd_outb(ahd, LQOMODE1, 0);
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
simode1 = ahd_inb(ahd, SIMODE1);
ahd_outb(ahd, SIMODE1, ENBUSFREE);
ahd_outb(ahd, SIMODE1, simode1 & ENBUSFREE);
ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) | STEP);
stepping = TRUE;
}

4
sys/dev/aic7xxx/aic7xxx.c
View File

@ -37,7 +37,7 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aic7xxx.c#133 $
* $Id: //depot/aic7xxx/aic7xxx/aic7xxx.c#134 $
*
* $FreeBSD$
*/
@ -1469,7 +1469,7 @@ ahc_clear_critical_section(struct ahc_softc *ahc)
* current connection, so we must
* leave it on while single stepping.
*/
ahc_outb(ahc, SIMODE1, ENBUSFREE);
ahc_outb(ahc, SIMODE1, simode1 & ENBUSFREE);
else
ahc_outb(ahc, SIMODE1, 0);
ahc_outb(ahc, CLRINT, CLRSCSIINT);