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PR kern/52039: use same safeguard as for the 82578

This commit is contained in:
kardel 2017-03-08 08:00:09 +00:00
parent 5c6be7789e
commit b6ca960363
1 changed files with 3 additions and 3 deletions
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6
sys/dev/pci/if_wm.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_wm.c,v 1.496 2017/03/03 16:48:55 knakahara Exp $ */
/* $NetBSD: if_wm.c,v 1.497 2017/03/08 08:00:09 kardel Exp $ */
/*
* Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc.
@ -84,7 +84,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.496 2017/03/03 16:48:55 knakahara Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.497 2017/03/08 08:00:09 kardel Exp $");
#ifdef _KERNEL_OPT
#include "opt_net_mpsafe.h"
@ -13178,7 +13178,7 @@ wm_enable_wakeup(struct wm_softc *sc)
/* Assume that the PHY is copper */
child = LIST_FIRST(&sc->sc_mii.mii_phys);
if (child->mii_mpd_rev <= 2)
if ((child != NULL) && (child->mii_mpd_rev <= 2))
sc->sc_mii.mii_writereg(sc->sc_dev, 1,
(768 << 5) | 25, 0x0444); /* magic num */
}