Commits
Janusz.Dziedzic@tieto.com committed 9da175204e4
mac80211: fix divide by zero when NOA update commit 519ee6918b91abdc4bc9720deae17599a109eb40 upstream. In case of one shot NOA the interval can be 0, catch that instead of potentially (depending on the driver) crashing like this: divide error: 0000 [#1] SMP [...] Call Trace: <IRQ> [<ffffffffc08e891c>] ieee80211_extend_absent_time+0x6c/0xb0 [mac80211] [<ffffffffc08e8a17>] ieee80211_update_p2p_noa+0xb7/0xe0 [mac80211] [<ffffffffc069cc30>] ath9k_p2p_ps_timer+0x170/0x190 [ath9k] [<ffffffffc070adf8>] ath_gen_timer_isr+0xc8/0xf0 [ath9k_hw] [<ffffffffc0691156>] ath9k_tasklet+0x296/0x2f0 [ath9k] [<ffffffff8107ad65>] tasklet_action+0xe5/0xf0 [...] Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>