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ath9k_hw: fix uninitialized variable data

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commit 80e84f3641 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: 80fe43f2bb ("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>
This commit is contained in:
Denis Efremov
2019-09-27 01:56:04 +03:00
committed by Greg Kroah-Hartman
parent e528acd31a
commit 8ae0f1781b
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
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@ -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) 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)) if (!AR_SREV_9462_20_OR_LATER(ah))
return; return;