| From 80e84f36412e0c5172447b6947068dca0d04ee82 Mon Sep 17 00:00:00 2001 |
| From: Denis Efremov <efremov@linux.com> |
| Date: Fri, 27 Sep 2019 01:56:04 +0300 |
| Subject: ath9k_hw: fix uninitialized variable data |
| |
| From: Denis Efremov <efremov@linux.com> |
| |
| 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> |
| |
| --- |
| drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c |
| +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c |
| @@ -4116,7 +4116,7 @@ static void ar9003_hw_thermometer_apply( |
| |
| 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; |
