rt2x00: Fix for rt2800usb for SHARED_KEY_TABLE initializations

Fixed comments about SHARED_KEY_TABLE_BASE and SHARED_KEY_MODE_BASE.
Fixed initialization loop for SHARED_KEY_MODE_ENTRY.

Based on a patch for rt2800pci from Benoit.

Signed-off-by: Benoit PAPILLAULT <benoit.papillault@free.fr>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -1463,6 +1463,10 @@ static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * ASIC will keep garbage value after boot, clear encryption keys.
 	 */
+	for (i = 0; i < 4; i++)
+		rt2x00usb_register_write(rt2x00dev,
+					 SHARED_KEY_MODE_ENTRY(i), 0);
+
 	for (i = 0; i < 256; i++) {
 		u32 wcid[2] = { 0xffffffff, 0x00ffffff };
 		rt2x00usb_register_multiwrite(rt2x00dev, MAC_WCID_ENTRY(i),
@@ -1472,10 +1476,6 @@ static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
 		rt2x00usb_register_write(rt2x00dev, MAC_IVEIV_ENTRY(i), 0);
 	}
 
-	for (i = 0; i < 16; i++)
-		rt2x00usb_register_write(rt2x00dev,
-					 SHARED_KEY_MODE_ENTRY(i), 0);
-
 	/*
 	 * Clear all beacons
 	 * For the Beacon base registers we only need to clear

drivers/net/wireless/rt2x00/rt2800usb.h

@@ -1300,8 +1300,8 @@
  * PAIRWISE_KEY_TABLE_BASE: 32-byte * 256 entry
  * MAC_IVEIV_TABLE_BASE: 8-byte * 256-entry
  * MAC_WCID_ATTRIBUTE_BASE: 4-byte * 256-entry
- * SHARED_KEY_TABLE_BASE: 32-byte * 16-entry
- * SHARED_KEY_MODE_BASE: 4-byte * 16-entry
+ * SHARED_KEY_TABLE_BASE: 32 bytes * 32-entry
+ * SHARED_KEY_MODE_BASE: 4 bits * 32-entry
  */
 #define MAC_WCID_BASE			0x1800
 #define PAIRWISE_KEY_TABLE_BASE		0x4000