linux-kernel - [PATCH] ath6kl: remove redundant variables netlen, orig_buf, orig

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Message-Id: <20180709131720.6668-1-colin.king@canonical.com>
Date:   Mon,  9 Jul 2018 14:17:20 +0100
From:   Colin King <colin.king@...onical.com>
To:     Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ath6kl: remove redundant variables netlen, orig_buf, orig_len, dropped and stats

From: Colin Ian King <colin.king@...onical.com>

Variables netlen, orig_buf, orig_len, dropped and stats are assigned values
but are never used hence they are redundant and can be removed.

Cleans up clang warnings:
warning: variable 'netlen' set but not used [-Wunused-but-set-variable]
warning: variable 'orig_buf' set but not used [-Wunused-but-set-variable]
warning: variable 'orig_len' set but not used [-Wunused-but-set-variable]
warning: variable 'dropped' set but not used [-Wunused-but-set-variable]
warning: variable 'stats' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/wireless/ath/ath6kl/htc_pipe.c | 10 ++--------
 drivers/net/wireless/ath/ath6kl/main.c     |  3 +--
 drivers/net/wireless/ath/ath6kl/txrx.c     |  2 --
 3 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/ath/ath6kl/htc_pipe.c b/drivers/net/wireless/ath/ath6kl/htc_pipe.c
index 546243e11737..434b66829646 100644
--- a/drivers/net/wireless/ath/ath6kl/htc_pipe.c
+++ b/drivers/net/wireless/ath/ath6kl/htc_pipe.c
@@ -746,10 +746,8 @@ static int ath6kl_htc_pipe_tx_complete(struct ath6kl *ar, struct sk_buff *skb)
 	struct htc_endpoint *ep;
 	struct htc_packet *packet;
 	u8 ep_id, *netdata;
-	u32 netlen;
 
 	netdata = skb->data;
-	netlen = skb->len;
 
 	htc_hdr = (struct htc_frame_hdr *) netdata;
 
@@ -855,12 +853,8 @@ static int htc_process_trailer(struct htc_target *target, u8 *buffer,
 {
 	struct htc_credit_report *report;
 	struct htc_record_hdr *record;
-	u8 *record_buf, *orig_buf;
-	int orig_len, status;
-
-	orig_buf = buffer;
-	orig_len = len;
-	status = 0;
+	u8 *record_buf;
+	int status = 0;
 
 	while (len > 0) {
 		if (len < sizeof(struct htc_record_hdr)) {
diff --git a/drivers/net/wireless/ath/ath6kl/main.c b/drivers/net/wireless/ath/ath6kl/main.c
index 808fb30be9ad..0c61dbaa62a4 100644
--- a/drivers/net/wireless/ath/ath6kl/main.c
+++ b/drivers/net/wireless/ath/ath6kl/main.c
@@ -272,7 +272,7 @@ int ath6kl_read_fwlogs(struct ath6kl *ar)
 {
 	struct ath6kl_dbglog_hdr debug_hdr;
 	struct ath6kl_dbglog_buf debug_buf;
-	u32 address, length, dropped, firstbuf, debug_hdr_addr;
+	u32 address, length, firstbuf, debug_hdr_addr;
 	int ret, loop;
 	u8 *buf;
 
@@ -303,7 +303,6 @@ int ath6kl_read_fwlogs(struct ath6kl *ar)
 	address = TARG_VTOP(ar->target_type,
 			    le32_to_cpu(debug_hdr.dbuf_addr));
 	firstbuf = address;
-	dropped = le32_to_cpu(debug_hdr.dropped);
 	ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
 	if (ret)
 		goto out;
diff --git a/drivers/net/wireless/ath/ath6kl/txrx.c b/drivers/net/wireless/ath/ath6kl/txrx.c
index 618d12ed4b40..b22ed499f7ba 100644
--- a/drivers/net/wireless/ath/ath6kl/txrx.c
+++ b/drivers/net/wireless/ath/ath6kl/txrx.c
@@ -1701,7 +1701,6 @@ void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid_mux, u16 seq_no,
 	struct ath6kl_sta *sta;
 	struct aggr_info_conn *aggr_conn = NULL;
 	struct rxtid *rxtid;
-	struct rxtid_stats *stats;
 	u16 hold_q_size;
 	u8 tid, aid;
 
@@ -1722,7 +1721,6 @@ void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid_mux, u16 seq_no,
 		return;
 
 	rxtid = &aggr_conn->rx_tid[tid];
-	stats = &aggr_conn->stat[tid];
 
 	if (win_sz < AGGR_WIN_SZ_MIN || win_sz > AGGR_WIN_SZ_MAX)
 		ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: win_sz %d, tid %d\n",
-- 
2.17.1