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authorEliad Peller <eliad@wizery.com>2012-09-03 18:27:58 +0300
committerLuciano Coelho <luca@coelho.fi>2012-09-27 12:13:54 +0300
commitaf390f4dd35373b3ca32bafc12d7f2ad12840529 (patch)
tree692652e15a9aed463e43f40aa351b4d640789faa /drivers/net/wireless/ti/wl18xx
parentab2c4f37dcef5bd517a95a32da50d5ed0cc24cb5 (diff)
downloadvexpress-lsk-af390f4dd35373b3ca32bafc12d7f2ad12840529.tar.gz
wlcore: protect wlcore_op_set_key with mutex
wlcore_op_set_key() calls wl18xx_set_key(), which in turn executes some of his function calls without acquiring wl->mutex and making sure the fw is awake. Adding mutex_lock()/ps_elp_wakeup() calls is not enough, as wl18xx_set_key() calls wl1271_tx_flush() which can't be called while the mutex is taken. Add the required calls to wlcore_op_set_key, but limit the queues_stop and flushing to the only encryption types in which a spare block might be needed (GEM and TKIP). [Arik - move state != ON check] Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Luciano Coelho <luca@coelho.fi>
Diffstat (limited to 'drivers/net/wireless/ti/wl18xx')
-rw-r--r--drivers/net/wireless/ti/wl18xx/main.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index 9e3e10a1349..a39682a7c25 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -1252,13 +1252,6 @@ static int wl18xx_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
if (!change_spare)
return wlcore_set_key(wl, cmd, vif, sta, key_conf);
- /*
- * stop the queues and flush to ensure the next packets are
- * in sync with FW spare block accounting
- */
- wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_SPARE_BLK);
- wl1271_tx_flush(wl);
-
ret = wlcore_set_key(wl, cmd, vif, sta, key_conf);
if (ret < 0)
goto out;
@@ -1281,7 +1274,6 @@ static int wl18xx_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
}
out:
- wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_SPARE_BLK);
return ret;
}