linux-kernel - [PATCH] ath6kl: wmi: remove set but not used 'rate'

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Date:   Mon, 31 Aug 2020 16:08:24 +0800
From:   Jason Yan <yanaijie@...wei.com>
To:     <kvalo@...eaurora.org>, <davem@...emloft.net>, <kuba@...nel.org>,
        <yanaijie@...wei.com>, <linux-wireless@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Hulk Robot <hulkci@...wei.com>
Subject: [PATCH] ath6kl: wmi: remove set but not used 'rate'

This addresses the following gcc warning with "make W=1":

drivers/net/wireless/ath/ath6kl/wmi.c: In function
‘ath6kl_wmi_bitrate_reply_rx’:
drivers/net/wireless/ath/ath6kl/wmi.c:1204:6: warning: variable ‘rate’
set but not used [-Wunused-but-set-variable]
 1204 |  s32 rate;
      |      ^~~~

The variable 'sgi' is alse removed because after 'rate' is removed, it
is not used too.

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Jason Yan <yanaijie@...wei.com>
---
 drivers/net/wireless/ath/ath6kl/wmi.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c
index 6885d2ded53a..a4339cca661f 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -1201,8 +1201,7 @@ static int ath6kl_wmi_pstream_timeout_event_rx(struct wmi *wmi, u8 *datap,
 static int ath6kl_wmi_bitrate_reply_rx(struct wmi *wmi, u8 *datap, int len)
 {
 	struct wmi_bit_rate_reply *reply;
-	s32 rate;
-	u32 sgi, index;
+	u32 index;
 
 	if (len < sizeof(struct wmi_bit_rate_reply))
 		return -EINVAL;
@@ -1211,15 +1210,10 @@ static int ath6kl_wmi_bitrate_reply_rx(struct wmi *wmi, u8 *datap, int len)
 
 	ath6kl_dbg(ATH6KL_DBG_WMI, "rateindex %d\n", reply->rate_index);
 
-	if (reply->rate_index == (s8) RATE_AUTO) {
-		rate = RATE_AUTO;
-	} else {
+	if (reply->rate_index != (s8) RATE_AUTO) {
 		index = reply->rate_index & 0x7f;
 		if (WARN_ON_ONCE(index > (RATE_MCS_7_40 + 1)))
 			return -EINVAL;
-
-		sgi = (reply->rate_index & 0x80) ? 1 : 0;
-		rate = wmi_rate_tbl[index][sgi];
 	}
 
 	ath6kl_wakeup_event(wmi->parent_dev);
-- 
2.25.4