airo: fix endianness bug in ->dBm handling

airo_translate_scan() reads BSSListRid directly, does _not_ byteswap
and uses ->dBm (__le16) as host-endian.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index 24fa0d62efe..6d4cc684afa 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -7239,6 +7239,7 @@ static inline char *airo_translate_scan(struct net_device *dev,
         char *                  current_val;    /* For rates */
         int                     i;
         char *          buf;
+        u16 dBm;
 
         /* First entry *MUST* be the AP MAC address */
         iwe.cmd = SIOCGIWAP;
@@ -7277,16 +7278,18 @@ static inline char *airo_translate_scan(struct net_device *dev,
         iwe.u.freq.e = 1;
         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
 
+        dBm = le16_to_cpu(bss->dBm);
+
         /* Add quality statistics */
         iwe.cmd = IWEVQUAL;
         if (ai->rssi) {
-                iwe.u.qual.level = 0x100 - bss->dBm;
-                iwe.u.qual.qual = airo_dbm_to_pct( ai->rssi, bss->dBm );
+                iwe.u.qual.level = 0x100 - dBm;
+                iwe.u.qual.qual = airo_dbm_to_pct(ai->rssi, dBm);
                 iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED
                                 | IW_QUAL_LEVEL_UPDATED
                                 | IW_QUAL_DBM;
         } else {
-                iwe.u.qual.level = (bss->dBm + 321) / 2;
+                iwe.u.qual.level = (dBm + 321) / 2;
                 iwe.u.qual.qual = 0;
                 iwe.u.qual.updated = IW_QUAL_QUAL_INVALID
                                 | IW_QUAL_LEVEL_UPDATED