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| author | Denis Efremov <efremov@linux.com> | 2019-09-27 01:56:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-28 18:29:02 +0100 |
| commit | 8ae0f1781b56af4d40fca9ecc29fde571e123be7 (patch) | |
| tree | bd27109992f9e93a4da9bc012898da56d01a5a7b | |
| parent | e528acd31a13f4115ab5a0bf804fd2356a8d3c32 (diff) | |
| download | linux-stable-8ae0f1781b56af4d40fca9ecc29fde571e123be7.tar.gz linux-stable-8ae0f1781b56af4d40fca9ecc29fde571e123be7.tar.bz2 linux-stable-8ae0f1781b56af4d40fca9ecc29fde571e123be7.zip | |
ath9k_hw: fix uninitialized variable data
commit 80e84f36412e0c5172447b6947068dca0d04ee82 upstream.
Currently, data variable in ar9003_hw_thermo_cal_apply() could be
uninitialized if ar9300_otp_read_word() will fail to read the value.
Initialize data variable with 0 to prevent an undefined behavior. This
will be enough to handle error case when ar9300_otp_read_word() fails.
Fixes: 80fe43f2bbd5 ("ath9k_hw: Read and configure thermocal for AR9462")
Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: stable@vger.kernel.org
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c index 08607d7fdb56..7eff6f8023d8 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c @@ -4115,7 +4115,7 @@ static void ar9003_hw_thermometer_apply(struct ath_hw *ah) static void ar9003_hw_thermo_cal_apply(struct ath_hw *ah) { - u32 data, ko, kg; + u32 data = 0, ko, kg; if (!AR_SREV_9462_20_OR_LATER(ah)) return; |