ath5k: fix off-by-one in gpio checks
Sanity checks against AR5K_NUM_GPIO were all broken. This doesn't
currently cause any problems since we only use the first four gpios.
Changes-licensed-under: ISC
Reported-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath5k/gpio.c b/drivers/net/wireless/ath5k/gpio.c
index b77205a..64a27e7 100644
--- a/drivers/net/wireless/ath5k/gpio.c
+++ b/drivers/net/wireless/ath5k/gpio.c
@@ -83,7 +83,7 @@
int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio)
{
ATH5K_TRACE(ah->ah_sc);
- if (gpio > AR5K_NUM_GPIO)
+ if (gpio >= AR5K_NUM_GPIO)
return -EINVAL;
ath5k_hw_reg_write(ah,
@@ -99,7 +99,7 @@
int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio)
{
ATH5K_TRACE(ah->ah_sc);
- if (gpio > AR5K_NUM_GPIO)
+ if (gpio >= AR5K_NUM_GPIO)
return -EINVAL;
ath5k_hw_reg_write(ah,
@@ -115,7 +115,7 @@
u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio)
{
ATH5K_TRACE(ah->ah_sc);
- if (gpio > AR5K_NUM_GPIO)
+ if (gpio >= AR5K_NUM_GPIO)
return 0xffffffff;
/* GPIO input magic */
@@ -131,7 +131,7 @@
u32 data;
ATH5K_TRACE(ah->ah_sc);
- if (gpio > AR5K_NUM_GPIO)
+ if (gpio >= AR5K_NUM_GPIO)
return -EINVAL;
/* GPIO output magic */
@@ -154,7 +154,7 @@
u32 data;
ATH5K_TRACE(ah->ah_sc);
- if (gpio > AR5K_NUM_GPIO)
+ if (gpio >= AR5K_NUM_GPIO)
return;
/*