mac80211: fix handling of null-rate control in rate_control_get_rate
authorJuuso Oikarinen <juuso.oikarinen@nokia.com>
Fri, 12 Feb 2010 08:05:45 +0000 (10:05 +0200)
committerJohn W. Linville <linville@tuxdriver.com>
Fri, 12 Feb 2010 19:50:22 +0000 (14:50 -0500)
commit5affcd6ba2036b59a4dee3f0576ae3584e92e4f1
tree78c6d3a329968b253d5c67c7d11adc0ab9af3c3d
parentfafaf31bf9f965d91462ee115e27ef6c262b74ea
mac80211: fix handling of null-rate control in rate_control_get_rate

For hardware with IEEE80211_HW_HAS_RATE_CONTROL the rate controller is not
initialized. However, calling functions such as ieee80211_beacon_get result
in the rate_control_get_rate function getting called, which is accessing
(in this case uninitialized) rate control structures unconditionally.

Fix by exiting the function before setting the rates for HW with
IEEE80211_HW_HAS_RATE_CONTROL set. The initialization of the ieee80211_tx_info
struct is intentionally still executed.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Kalle Valo <kalle.valo@nokia.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/mac80211/rate.c