3.2.65-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Johannes Berg <johan...@sipsolutions.net> commit 46238845bd609a5c0fbe076e1b82b4c5b33360b2 upstream. When an interface is deleted, an ongoing hardware scan is canceled and the driver must abort the scan, at the very least reporting completion while the interface is removed. However, if it scheduled the work that might only run after everything is said and done, which leads to cfg80211 warning that the scan isn't reported as finished yet; this is no fault of the driver, it already did, but mac80211 hasn't processed it. To fix this situation, flush the delayed work when the interface being removed is the one that was executing the scan. Reported-by: Sujith Manoharan <suj...@msujith.org> Tested-by: Sujith Manoharan <suj...@msujith.org> Signed-off-by: Johannes Berg <johannes.b...@intel.com> [bwh: Backported to 3.2: - No rcu_access_pointer() needed - Adjust context] Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- net/mac80211/iface.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -382,10 +382,12 @@ static void ieee80211_do_stop(struct iee u32 hw_reconf_flags = 0; int i; enum nl80211_channel_type orig_ct; + bool cancel_scan; clear_bit(SDATA_STATE_RUNNING, &sdata->state); - if (local->scan_sdata == sdata) + cancel_scan = local->scan_sdata == sdata; + if (cancel_scan) ieee80211_scan_cancel(local); /* @@ -543,6 +545,9 @@ static void ieee80211_do_stop(struct iee ieee80211_recalc_ps(local, -1); + if (cancel_scan) + flush_delayed_work(&local->scan_work); + if (local->open_count == 0) { if (local->ops->napi_poll) napi_disable(&local->napi); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html