diff options
| author | imp <imp@FreeBSD.org> | 2005-09-19 03:10:21 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2005-09-19 03:10:21 +0000 |
| commit | 4e70215e6bf590140205774753c8b0a1f1fe9a36 (patch) | |
| tree | c3358cebc77043ea8b2a3a5036b02dad6a674b7e /sys/dev/iwi/if_iwi.c | |
| parent | 37a0bbb7e543c6b2a2f055d676d5a94f781d7738 (diff) | |
| download | FreeBSD-src-4e70215e6bf590140205774753c8b0a1f1fe9a36.zip FreeBSD-src-4e70215e6bf590140205774753c8b0a1f1fe9a36.tar.gz | |
Make sure that we call if_free(ifp) after bus_teardown_intr. Since we
could get an interrupt after we free the ifp, and the interrupt
handler depended on the ifp being still alive, this could, in theory,
cause a crash. Eliminate this possibility by moving the if_free to
after the bus_teardown_intr() call.
Diffstat (limited to 'sys/dev/iwi/if_iwi.c')
| -rw-r--r-- | sys/dev/iwi/if_iwi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/iwi/if_iwi.c b/sys/dev/iwi/if_iwi.c index 420d2ae..d353a03 100644 --- a/sys/dev/iwi/if_iwi.c +++ b/sys/dev/iwi/if_iwi.c @@ -467,7 +467,6 @@ iwi_detach(device_t dev) if (ifp != NULL) { bpfdetach(ifp); ieee80211_ifdetach(ic); - if_free(ifp); } iwi_free_cmd_ring(sc, &sc->cmdq); @@ -485,6 +484,8 @@ iwi_detach(device_t dev) if (sc->mem != NULL) bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); + if (ifp != NULL) + if_free(ifp); mtx_destroy(&sc->sc_mtx); return 0; |
