linux-kernel - [PATCH] wireless: ath: remove unused-but-set parameter

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Date:   Mon, 14 Aug 2023 09:32:23 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Kalle Valo <kvalo@...nel.org>,
        Jeff Johnson <quic_jjohnson@...cinc.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        Nick Kossifidis <mickflemm@...il.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Toke Høiland-Jørgensen <toke@...e.dk>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Aloka Dixit <quic_alokad@...cinc.com>,
        Wen Gong <quic_wgong@...cinc.com>,
        Ramya Gnanasekar <quic_rgnanase@...cinc.com>,
        Karthik M <quic_karm@...cinc.com>,
        Aditya Kumar Singh <quic_adisi@...cinc.com>,
        Muna Sinada <quic_msinada@...cinc.com>,
        Johannes Berg <johannes.berg@...el.com>,
        ath12k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH] wireless: ath: remove unused-but-set parameter

From: Arnd Bergmann <arnd@...db.de>

This has never been used since the driver was merged, but it now causes
a W=1 warning in recent clang versions

drivers/net/wireless/ath/ath9k/main.c:1566:21: error: parameter 'changed_flags' set but not used [-Werror,-Wunused-but-set-parameter]
drivers/net/wireless/ath/ath9k/htc_drv_main.c:1258:25: error: parameter 'changed_flags' set but not used [-Werror,-Wunused-but-set-parameter]
drivers/net/wireless/ath/ath5k/mac80211-ops.c:367:62: error: parameter 'changed_flags' set but not used [-Werror,-Wunused-but-set-parameter]

Remove the bit manipulation on the otherwise unused parameter.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/wireless/ath/ath12k/mac.c         | 5 ++---
 drivers/net/wireless/ath/ath5k/mac80211-ops.c | 1 -
 drivers/net/wireless/ath/ath9k/htc_drv_main.c | 1 -
 drivers/net/wireless/ath/ath9k/main.c         | 1 -
 4 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 91453624fd842..354ed66e6d13b 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -5666,7 +5666,6 @@ static void ath12k_mac_op_configure_filter(struct ieee80211_hw *hw,
 
 	mutex_lock(&ar->conf_mutex);
 
-	changed_flags &= SUPPORTED_FILTERS;
 	*total_flags &= SUPPORTED_FILTERS;
 	ar->filter_flags = *total_flags;
 
@@ -5684,8 +5683,8 @@ static void ath12k_mac_op_configure_filter(struct ieee80211_hw *hw,
 			    "fail to set monitor filter: %d\n", ret);
 	}
 	ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
-		   "changed_flags:0x%x, total_flags:0x%x, reset_flag:%d\n",
-		   changed_flags, *total_flags, reset_flag);
+		   "total_flags:0x%x, reset_flag:%d\n",
+		   *total_flags, reset_flag);
 
 	mutex_unlock(&ar->conf_mutex);
 }
diff --git a/drivers/net/wireless/ath/ath5k/mac80211-ops.c b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
index 11ed30d6b595a..c630343ca4f9b 100644
--- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
+++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
@@ -382,7 +382,6 @@ ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 	mfilt[1] = multicast >> 32;
 
 	/* Only deal with supported flags */
-	changed_flags &= SUPPORTED_FIF_FLAGS;
 	*new_flags &= SUPPORTED_FIF_FLAGS;
 
 	/* If HW detects any phy or radar errors, leave those filters on.
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index 51766de5ec3b6..6eeaa9011a168 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -1264,7 +1264,6 @@ static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
 	u32 rfilt;
 
 	mutex_lock(&priv->mutex);
-	changed_flags &= SUPPORTED_FILTERS;
 	*total_flags &= SUPPORTED_FILTERS;
 
 	if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 6360d3356e256..1494feedb27db 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1571,7 +1571,6 @@ static void ath9k_configure_filter(struct ieee80211_hw *hw,
 	struct ath_chanctx *ctx;
 	u32 rfilt;
 
-	changed_flags &= SUPPORTED_FILTERS;
 	*total_flags &= SUPPORTED_FILTERS;
 
 	spin_lock_bh(&sc->chan_lock);
-- 
2.39.2