d/freebsd-nq
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If an interrupt is received with no vap attached, just fail LINK events.

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This fixes a NULL pointer dereference which occurs if the vap list is
empty but someone brings up the wi0 interface.
This commit is contained in:
Adrian Chadd 2012-02-25 08:01:29 +00:00
parent a2cdef71d1
commit 0caafbf948
1 changed files with 5 additions and 0 deletions
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5
sys/dev/wi/if_wi.c
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@ -1511,6 +1511,10 @@ wi_info_intr(struct wi_softc *sc)
case WI_INFO_LINK_STAT:
wi_read_bap(sc, fid, sizeof(ltbuf), &stat, sizeof(stat));
DPRINTF(("wi_info_intr: LINK_STAT 0x%x\n", le16toh(stat)));
if (vap == NULL)
goto finish;
switch (le16toh(stat)) {
case WI_INFO_LINK_STAT_CONNECTED:
if (vap->iv_state == IEEE80211_S_RUN &&
@ -1566,6 +1570,7 @@ wi_info_intr(struct wi_softc *sc)
le16toh(ltbuf[1]), le16toh(ltbuf[0])));
break;
}
finish:
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_INFO);
}