adds eeprom endianess check to ath9k

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 31068

package/mac80211/patches/999-ath9k.patch

@@ -0,0 +1,48 @@
+--- a/drivers/net/wireless/ath/ath9k/eeprom_def.c
++++ b/drivers/net/wireless/ath/ath9k/eeprom_def.c
+@@ -267,7 +267,7 @@ static int ath9k_hw_def_check_eeprom(str
+ 	struct ar5416_eeprom_def *eep =
+ 		(struct ar5416_eeprom_def *) &ah->eeprom.def;
+ 	struct ath_common *common = ath9k_hw_common(ah);
+-	u16 *eepdata, temp, magic, magic2;
++	u16 *eepdata, temp, magic;
+ 	u32 sum = 0, el;
+ 	bool need_swap = false;
+ 	int i, addr, size;
+@@ -277,27 +277,15 @@ static int ath9k_hw_def_check_eeprom(str
+ 		return false;
+ 	}
+ 
+-	if (!ath9k_hw_use_flash(ah)) {
+-		ath_dbg(common, EEPROM, "Read Magic = 0x%04X\n", magic);
+-
+-		if (magic != AR5416_EEPROM_MAGIC) {
+-			magic2 = swab16(magic);
+-
+-			if (magic2 == AR5416_EEPROM_MAGIC) {
+-				size = sizeof(struct ar5416_eeprom_def);
+-				need_swap = true;
+-				eepdata = (u16 *) (&ah->eeprom);
+-
+-				for (addr = 0; addr < size / sizeof(u16); addr++) {
+-					temp = swab16(*eepdata);
+-					*eepdata = temp;
+-					eepdata++;
+-				}
+-			} else {
+-				ath_err(common,
+-					"Invalid EEPROM Magic. Endianness mismatch.\n");
+-				return -EINVAL;
+-			}
++	if (swab16(magic) == AR5416_EEPROM_MAGIC) {
++		size = sizeof(struct ar5416_eeprom_def);
++		need_swap = true;
++		eepdata = (u16 *) (&ah->eeprom);
++
++		for (addr = 0; addr < size / sizeof(u16); addr++) {
++			temp = swab16(*eepdata);
++			*eepdata = temp;
++			eepdata++;
+ 		}
+ 	}
+