ath9k: fix access to freed data on unload

Calling ath_bus_cleanup() after ieee80211_free_hw() resulted in access
to common->bus_ops, which is already freed as part of the device data.

Remove the cleanup field in struct ath_bus_ops, as it was never used
properly.  Remove ath_bus_cleanup().  Merge cleanup functions in place
of the ath_bus_cleanup() calls.  Take care not to use any device data
after ieee80211_free_hw().

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 9e05648356fe..71fc960814f0 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -74,7 +74,6 @@ struct ath_common;
 
 struct ath_bus_ops {
         void            (*read_cachesize)(struct ath_common *common, int *csz);
-        void            (*cleanup)(struct ath_common *common);
         bool            (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
         void            (*bt_coex_prep)(struct ath_common *common);
 };