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fix crash when bringing up the device and no cable is plugged in

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This commit is contained in:
cegger 2009-01-22 09:37:44 +00:00
parent 76a119fa8f
commit ea6211cb91
1 changed files with 7 additions and 5 deletions
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12
sys/dev/pci/if_age.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_age.c,v 1.9 2009/01/21 07:48:54 cegger Exp $ */
/* $NetBSD: if_age.c,v 1.10 2009/01/22 09:37:44 cegger Exp $ */
/* $OpenBSD: if_age.c,v 1.1 2009/01/16 05:00:34 kevlo Exp $ */
/*-
@ -31,7 +31,7 @@
/* Driver for Attansic Technology Corp. L1 Gigabit Ethernet. */
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_age.c,v 1.9 2009/01/21 07:48:54 cegger Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_age.c,v 1.10 2009/01/22 09:37:44 cegger Exp $");
#include "bpfilter.h"
#include "vlan.h"
@ -476,13 +476,15 @@ age_intr(void *arg)
status = CSR_READ_4(sc, AGE_INTR_STATUS);
if (status == 0 || (status & AGE_INTRS) == 0)
return (0);
return 0;
cmb = sc->age_rdata.age_cmb_block;
if (cmb == NULL)
return 0;
/* Disable interrupts. */
CSR_WRITE_4(sc, AGE_INTR_STATUS, status | INTR_DIS_INT);
cmb = sc->age_rdata.age_cmb_block;
bus_dmamap_sync(sc->sc_dmat, sc->age_cdata.age_cmb_block_map, 0,
sc->age_cdata.age_cmb_block_map->dm_mapsize, BUS_DMASYNC_POSTREAD);
status = le32toh(cmb->intr_status);