ipw2x00: remove redundant variables len, ret, reason and crypt

Commit Message

Colin King July 11, 2018, 7:12 a.m. UTC

From: Colin Ian King <[e-mail]>

Variables len, ret, reason and crypt are assigned values that
are never read, hence they are redundant and can be removed.

Note: For the variable ret, a return code is being assigned, but
this is not returned and 0 is currently being returned, I believe
this is OK.

Cleans up clang warnings:
warning: variable 'len' set but not used [-Wunused-but-set-variable]
variable 'ret' set but not used [-Wunused-but-set-variable]
warning: variable 'reason' set but not used [-Wunused-but-set-variable]
warning: variable 'crypt' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <[e-mail]>
---
 drivers/net/wireless/intel/ipw2x00/ipw2100.c   | 7 -------
 drivers/net/wireless/intel/ipw2x00/libipw_wx.c | 2 --
 2 files changed, 9 deletions(-)

Comments

Kalle Valo July 31, 2018, 7:18 a.m. UTC | #1

Colin King <[e-mail]> wrote:

> From: Colin Ian King <[e-mail]>
> 
> Variables len, ret, reason and crypt are assigned values that
> are never read, hence they are redundant and can be removed.
> 
> Note: For the variable ret, a return code is being assigned, but
> this is not returned and 0 is currently being returned, I believe
> this is OK.
> 
> Cleans up clang warnings:
> warning: variable 'len' set but not used [-Wunused-but-set-variable]
> variable 'ret' set but not used [-Wunused-but-set-variable]
> warning: variable 'reason' set but not used [-Wunused-but-set-variable]
> warning: variable 'crypt' set but not used [-Wunused-but-set-variable]
> 
> Signed-off-by: Colin Ian King <[e-mail]>

Patch applied to wireless-drivers-next.git, thanks.

0e139e97f58e ipw2x00: remove redundant variables len, ret, reason and crypt

Patch

diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2100.c b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
index 1ad83ef5f202..910db46db6a1 100644
--- a/drivers/net/wireless/intel/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
@@ -5112,11 +5112,9 @@  static int ipw2100_disassociate_bssid(struct ipw2100_priv *priv)
 		.host_command_length = ETH_ALEN
 	};
 	int err;
-	int len;
 
 	IPW_DEBUG_HC("DISASSOCIATION_BSSID\n");
 
-	len = ETH_ALEN;
 	/* The Firmware currently ignores the BSSID and just disassociates from
 	 * the currently associated AP -- but in the off chance that a future
 	 * firmware does use the BSSID provided here, we go ahead and try and
@@ -7723,7 +7721,6 @@  static int ipw2100_wx_get_auth(struct net_device *dev,
 	struct libipw_device *ieee = priv->ieee;
 	struct lib80211_crypt_data *crypt;
 	struct iw_param *param = &wrqu->param;
-	int ret = 0;
 
 	switch (param->flags & IW_AUTH_INDEX) {
 	case IW_AUTH_WPA_VERSION:
@@ -7733,7 +7730,6 @@  static int ipw2100_wx_get_auth(struct net_device *dev,
 		/*
 		 * wpa_supplicant will control these internally
 		 */
-		ret = -EOPNOTSUPP;
 		break;
 
 	case IW_AUTH_TKIP_COUNTERMEASURES:
@@ -7801,9 +7797,6 @@  static int ipw2100_wx_set_mlme(struct net_device *dev,
 {
 	struct ipw2100_priv *priv = libipw_priv(dev);
 	struct iw_mlme *mlme = (struct iw_mlme *)extra;
-	__le16 reason;
-
-	reason = cpu_to_le16(mlme->reason_code);
 
 	switch (mlme->cmd) {
 	case IW_MLME_DEAUTH:
diff --git a/drivers/net/wireless/intel/ipw2x00/libipw_wx.c b/drivers/net/wireless/intel/ipw2x00/libipw_wx.c
index dd29f46d086b..d32d39fa2686 100644
--- a/drivers/net/wireless/intel/ipw2x00/libipw_wx.c
+++ b/drivers/net/wireless/intel/ipw2x00/libipw_wx.c
@@ -479,7 +479,6 @@  int libipw_wx_get_encode(struct libipw_device *ieee,
 {
 	struct iw_point *erq = &(wrqu->encoding);
 	int len, key;
-	struct lib80211_crypt_data *crypt;
 	struct libipw_security *sec = &ieee->sec;
 
 	LIBIPW_DEBUG_WX("GET_ENCODE\n");
@@ -492,7 +491,6 @@  int libipw_wx_get_encode(struct libipw_device *ieee,
 	} else
 		key = ieee->crypt_info.tx_keyidx;
 
-	crypt = ieee->crypt_info.crypt[key];
 	erq->flags = key + 1;
 
 	if (!sec->enabled) {