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authorPavel Roskin <proski@gnu.org>2009-08-26 22:30:00 -0400
committerJohn W. Linville <linville@tuxdriver.com>2009-08-28 14:40:54 -0400
commit3b3ee43da43aca1cbf4c3651379b2b1492e49dd6 (patch)
tree2b2ffa22c55e817f168dbf1e179ead2050fca7ec
parentca5efbe243dde7d269b6bbae7feaa5e4740db36e (diff)
ath5k: fix uninitialized value use in ath5k_eeprom_read_turbo_modes()
The `val' variable in ath5k_eeprom_read_turbo_modes() is used uninitialized. gcc 4.4.1 with -fno-inline-functions-called-once reports it: eeprom.c: In function 'ath5k_eeprom_read_turbo_modes': eeprom.c:441: warning: 'val' may be used uninitialized in this function Comparing the code to the Atheros HAL, it's clear that the split between ath5k_eeprom_read_modes() and ath5k_eeprom_read_turbo_modes() was incorrect. The Atheros HAL reads both turbo and non-turbo data from EEPROM in one function. Some turbo mode parameters are derived from the same EEPROM values as non-turbo parameters, just from different bits. Merge ath5k_eeprom_read_turbo_modes() into ath5k_eeprom_read_modes() to fix the warning. The actual values and offsets have been cross-checked against Atheros HAL. Signed-off-by: Pavel Roskin <proski@gnu.org> Acked-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath5k/eeprom.c29
1 files changed, 5 insertions, 24 deletions
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 8af477dd6fc..644962adda9 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -414,27 +414,11 @@ static int ath5k_eeprom_read_modes(struct ath5k_hw *ah, u32 *offset,
break;
}
-done:
- /* return new offset */
- *offset = o;
-
- return 0;
-}
-
-/*
- * Read turbo mode information on newer EEPROM versions
- */
-static int
-ath5k_eeprom_read_turbo_modes(struct ath5k_hw *ah,
- u32 *offset, unsigned int mode)
-{
- struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
- u32 o = *offset;
- u16 val;
- int ret;
-
+ /*
+ * Read turbo mode information on newer EEPROM versions
+ */
if (ee->ee_version < AR5K_EEPROM_VERSION_5_0)
- return 0;
+ goto done;
switch (mode){
case AR5K_EEPROM_MODE_11A:
@@ -468,6 +452,7 @@ ath5k_eeprom_read_turbo_modes(struct ath5k_hw *ah,
break;
}
+done:
/* return new offset */
*offset = o;
@@ -504,10 +489,6 @@ ath5k_eeprom_init_modes(struct ath5k_hw *ah)
ret = ath5k_eeprom_read_modes(ah, &offset, mode);
if (ret)
return ret;
-
- ret = ath5k_eeprom_read_turbo_modes(ah, &offset, mode);
- if (ret)
- return ret;
}
/* override for older eeprom versions for better performance */