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Correct a serious problem that affects at least front ends that can only 

use PIO (or equivalent) code to do asynchronous transfers:  In
ncr5380_scsi_cmd(), test to see if the request has been completed after
the call to ncr5380_sched(), and return COMPLETE if so.  This avoids
going into an infinite loop in scsipi_execute_xs() while waiting for an
interrupt to trigger completion of the transfer... which, of course,
never happens, since it's already done.
This commit is contained in:
scottr 1998-09-14 05:56:14 +00:00
parent f2c6836685
commit 0af57c2461
1 changed files with 4 additions and 3 deletions
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7
sys/dev/ic/ncr5380sbc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ncr5380sbc.c,v 1.25 1998/07/04 22:18:50 jonathan Exp $ */
/* $NetBSD: ncr5380sbc.c,v 1.26 1998/09/14 05:56:14 scottr Exp $ */
/*
* Copyright (c) 1995 David Jones, Gordon W. Ross
@ -670,7 +670,8 @@ new:
if ((xs->flags & ITSDONE) == 0)
panic("ncr5380_scsi_cmd: poll didn't finish");
rv = COMPLETE;
}
} else if ((xs->flags & ITSDONE))
rv = COMPLETE;
out:
splx(s);
@ -2537,7 +2538,7 @@ ncr5380_show_req(sr)
return;
}
db_printf("\n");
#ifdef PIDEBUG
#ifdef SCSIDEBUG
show_scsipi_xs(xs);
#else
db_printf("xs=%p\n", xs);