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authorJiri Slaby <jirislaby@gmail.com>2009-03-07 10:26:42 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-03-16 18:09:36 -0400
commit8d6c39efed5987d3c1ade96e93753125a099f512 (patch)
tree588f33c4f9e0c64aca810718b8b2c60a929ba1bb
parent2c91108c55477334f6854a587ec6e9111d8f1407 (diff)
ath5k: don't change mac in eeprom_read_mac on error
Do not touch mac parameter passed to ath5k_eeprom_read_mac unless we are sure we have correct address. I.e. when returning error, do not change it. While at it, use '= {}' compiler trick for memsetting mac_d. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Cc: Luis R. Rodriguez <lrodriguez@atheros.com> Acked-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath5k/eeprom.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/net/wireless/ath5k/eeprom.c b/drivers/net/wireless/ath5k/eeprom.c
index a54ee7e4967..ac45ca47ca8 100644
--- a/drivers/net/wireless/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath5k/eeprom.c
@@ -1418,14 +1418,11 @@ ath5k_eeprom_init(struct ath5k_hw *ah)
*/
int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
{
- u8 mac_d[ETH_ALEN];
+ u8 mac_d[ETH_ALEN] = {};
u32 total, offset;
u16 data;
int octet, ret;
- memset(mac, 0, ETH_ALEN);
- memset(mac_d, 0, ETH_ALEN);
-
ret = ath5k_hw_eeprom_read(ah, 0x20, &data);
if (ret)
return ret;
@@ -1441,11 +1438,11 @@ int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
octet += 2;
}
- memcpy(mac, mac_d, ETH_ALEN);
-
if (!total || total == 3 * 0xffff)
return -EINVAL;
+ memcpy(mac, mac_d, ETH_ALEN);
+
return 0;
}