diff options
| author | David Gwynne <dlg@cvs.openbsd.org> | 2006-05-31 03:06:40 +0000 |
|---|---|---|
| committer | David Gwynne <dlg@cvs.openbsd.org> | 2006-05-31 03:06:40 +0000 |
| commit | 05f31df8987fd2c50c38ef52709c52fa4439bf54 (patch) | |
| tree | 9ee0fd1a9cd5e733910fee32a0e66d1abe19b0e0 /sys | |
| parent | ee729b690ed14d7f8526994db000ee411e8603f7 (diff) | |
mpi hardware uses an 8 bit field to describe the number of devices it has
on a port. since 256 wont fit into 8 bits they say 0 means 256. this diff
does the appropriate interpretation. it also avoids a divide by zero when
we figure the openings out by dividing the number of commands the
controller can support by the number of devices it supports.
panic found while testing the fc controller at home.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/ic/mpi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sys/dev/ic/mpi.c b/sys/dev/ic/mpi.c index 2b6e0095aa4..7a1b7d6d173 100644 --- a/sys/dev/ic/mpi.c +++ b/sys/dev/ic/mpi.c @@ -1,4 +1,4 @@ -/* $OpenBSD: mpi.c,v 1.18 2006/05/31 02:39:29 dlg Exp $ */ +/* $OpenBSD: mpi.c,v 1.19 2006/05/31 03:06:39 dlg Exp $ */ /* * Copyright (c) 2005, 2006 David Gwynne <dlg@openbsd.org> @@ -1274,7 +1274,7 @@ mpi_iocfacts(struct mpi_softc *sc) #endif /* MPI_DEBUG */ sc->sc_maxcmds = letoh16(ifp.global_credits); - sc->sc_buswidth = ifp.max_devices; + sc->sc_buswidth = (ifp.max_devices == 0) ? 256 : ifp.max_devices; sc->sc_maxchdepth = ifp.max_chain_depth; /* @@ -1311,7 +1311,7 @@ mpi_iocinit(struct mpi_softc *sc) iiq.function = MPI_FUNCTION_IOC_INIT; iiq.whoinit = MPI_WHOINIT_HOST_DRIVER; - iiq.max_devices = sc->sc_buswidth; + iiq.max_devices = (sc->sc_buswidth == 256) ? 0 : sc->sc_buswidth; iiq.max_buses = 1; iiq.msg_context = htole32(0xd00fd00f); |