2022-08-01 07:13:26

by Ping-Ke Shih

[permalink] [raw]
Subject: [PATCH v2] rtlwifi: 8192de: correct checking of IQK reload

Since IQK could spend time, we make a cache of IQK result matrix that looks
like iqk_matrix[channel_idx].val[x][y], and we can reload the matrix if we
have made a cache. To determine a cache is made, we check
iqk_matrix[channel_idx].val[0][0].

The initial commit 7274a8c22980 ("rtlwifi: rtl8192de: Merge phy routines")
make a mistake that checks incorrect iqk_matrix[channel_idx].val[0] that
is always true, and this mistake is found by commit ee3db469dd31
("wifi: rtlwifi: remove always-true condition pointed out by GCC 12"), so
I recall the vendor driver to find fix and apply the correctness.

Fixes: 7274a8c22980 ("rtlwifi: rtl8192de: Merge phy routines")
Signed-off-by: Ping-Ke Shih <[email protected]>
---
v2: add more commit message to make it clear what this patch does
---
drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
index 15e6a6aded319..d18c092b61426 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
@@ -2386,11 +2386,10 @@ void rtl92d_phy_reload_iqk_setting(struct ieee80211_hw *hw, u8 channel)
rtl_dbg(rtlpriv, COMP_SCAN, DBG_LOUD,
"Just Read IQK Matrix reg for channel:%d....\n",
channel);
- _rtl92d_phy_patha_fill_iqk_matrix(hw, true,
- rtlphy->iqk_matrix[
- indexforchannel].value, 0,
- (rtlphy->iqk_matrix[
- indexforchannel].value[0][2] == 0));
+ if (rtlphy->iqk_matrix[indexforchannel].value[0][0] != 0)
+ _rtl92d_phy_patha_fill_iqk_matrix(hw, true,
+ rtlphy->iqk_matrix[indexforchannel].value, 0,
+ rtlphy->iqk_matrix[indexforchannel].value[0][2] == 0);
if (IS_92D_SINGLEPHY(rtlhal->version)) {
if ((rtlphy->iqk_matrix[
indexforchannel].value[0][4] != 0)
--
2.25.1