diff options
| author | Nicolas Iooss <nicolas.iooss_linux@m4x.org> | 2017-12-10 20:51:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 11:01:22 +0100 |
| commit | 2159db50a57264f18416b3d20f110044a7f92dac (patch) | |
| tree | 2c52bec80f75a4b262d2c465ed6c725345e8aa3e /drivers/net/wireless/realtek | |
| parent | 9f180c6db58e3db418da262dac5c9017afde91fe (diff) | |
rtlwifi: always initialize variables given to RT_TRACE()
[ Upstream commit e4779162f7377baa9fb9a044555ecaae22c3f125 ]
In rtl_rx_ampdu_apply(), when rtlpriv->cfg->ops->get_btc_status()
returns false, RT_TRACE() is called with the values of variables
reject_agg and agg_size, which have not been initialized.
Always initialize these variables in order to prevent using
uninitialized values.
This issue has been found with clang. The compiler reported:
drivers/net/wireless/realtek/rtlwifi/base.c:1665:6: error: variable
'agg_size' is used uninitialized whenever 'if' condition is false
[-Werror,-Wsometimes-uninitialized]
if (rtlpriv->cfg->ops->get_btc_status())
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/realtek/rtlwifi/base.c:1671:31: note:
uninitialized use occurs here
reject_agg, ctrl_agg_size, agg_size);
^~~~~~~~
drivers/net/wireless/realtek/rtlwifi/base.c:1665:6: error: variable
'reject_agg' is used uninitialized whenever 'if' condition
is false [-Werror,-Wsometimes-uninitialized]
if (rtlpriv->cfg->ops->get_btc_status())
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/realtek/rtlwifi/base.c:1671:4: note:
uninitialized use occurs here
reject_agg, ctrl_agg_size, agg_size);
^~~~~~~~~~
Fixes: 2635664e6e4a ("rtlwifi: Add rx ampdu cfg for btcoexist.")
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/wireless/realtek')
| -rw-r--r-- | drivers/net/wireless/realtek/rtlwifi/base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c index ea18aa7afecb..93256f8bc0b5 100644 --- a/drivers/net/wireless/realtek/rtlwifi/base.c +++ b/drivers/net/wireless/realtek/rtlwifi/base.c @@ -1664,7 +1664,7 @@ int rtl_tx_agg_oper(struct ieee80211_hw *hw, void rtl_rx_ampdu_apply(struct rtl_priv *rtlpriv) { struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops; - u8 reject_agg, ctrl_agg_size = 0, agg_size; + u8 reject_agg = 0, ctrl_agg_size = 0, agg_size = 0; if (rtlpriv->cfg->ops->get_btc_status()) btc_ops->btc_get_ampdu_cfg(rtlpriv, &reject_agg, |