zd1211rw: Fix data padding for QoS

This patch fixes a data alignment issue in the zd1211rw driver.
The IEEE80211_STYPE_QOS_DATA bit should be used as a bitwise test
to test for the presence of the 2 byte QoS control field.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index 6424e5a..418606a 100644 (file)
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -719,7 +719,7 @@ int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length)
        fc = le16_to_cpu(*((__le16 *) buffer));
 
        is_qos = ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
-                ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_QOS_DATA);
+                (fc & IEEE80211_STYPE_QOS_DATA);
        is_4addr = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
                   (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
        need_padding = is_qos ^ is_4addr;