tree 3c6def8eb28a1ee93a74fcb0c6d48a9fd5d5541d
parent ed620590de15021f6baf08ca098c90f47470efd7
author Kalle Valo <kalle.valo@nokia.com> 1256657777 +0200
committer John W. Linville <linville@tuxdriver.com> 1256935758 -0400

mac80211: fix dynamic power save for devices with nullfunc support in hw

In TX path it was assumed that dynamic power save works only if
IEEE80211_HW_PS_NULLFUNC_STACK is set. But is not the case, there are
devices which have nullfunc support in hardware but need mac80211
to handle dynamic power save timers, TI's wl1251 is one of them.

The fix is to not check for IEEE80211_HW_PS_NULLFUNC_STACK in
is_dynamic_ps_enabled(), instead check IEEE80211_HW_SUPPORTS_PS and
IEEE80211_HW_SUPPORTS_DYNAMIC_PS flags and act accordingly.

Tested with wl1251.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>