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iwn: fix error handling for one well-known corner case.

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This commit is contained in:
avos 2017-03-26 17:59:51 +00:00
parent 7037a749bf
commit e995d5a258
1 changed files with 12 additions and 2 deletions
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14
sys/dev/iwn/if_iwn.c
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@ -4739,9 +4739,19 @@ iwn_tx_cmd(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
/* XXX fix this */
/*
* NB: Do not return error;
* original mbuf does not exist anymore.
*/
device_printf(sc->sc_dev,
"%s: can't map mbuf (error %d)\n", __func__, error);
return error;
"%s: can't map mbuf (error %d)\n",
__func__, error);
if_inc_counter(ni->ni_vap->iv_ifp,
IFCOUNTER_OERRORS, 1);
ieee80211_free_node(ni);
m_freem(m);
return 0;
}
}