From:   Abdun Nihaal <abdun.nihaal@gmail.com>
To:     gregkh@linuxfoundation.org
Cc:     Larry.Finger@lwfinger.net, phil@philpotter.co.uk,
        straube.linux@gmail.com, martin@kaiser.cx,
        linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org,
        Abdun Nihaal <abdun.nihaal@gmail.com>
Subject: [PATCH] staging: r8188eu: remove unneeded ret variables
Date:   Fri, 31 Dec 2021 22:55:27 +0530
Message-Id: <20211231172527.184788-1-abdun.nihaal@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Remove unneeded return variables in ioctl_linux.c that are initialized
to 0 and are not assigned after. Instead, return 0 directly.

Found using coccinelle (returnvar.cocci).

Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
---
 drivers/staging/r8188eu/os_dep/ioctl_linux.c | 88 +++++++-------------
 1 file changed, 31 insertions(+), 57 deletions(-)

diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
index adc03862bc03..9d277151a5ee 100644
--- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
@@ -1383,7 +1383,7 @@ static int rtw_wx_get_essid(struct net_device *dev,
 			      struct iw_request_info *a,
 			      union iwreq_data *wrqu, char *extra)
 {
-	u32 len, ret = 0;
+	u32 len;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct	mlme_priv	*pmlmepriv = &padapter->mlmepriv;
 	struct wlan_bssid_ex  *pcur_bss = &pmlmepriv->cur_network.network;
@@ -1399,7 +1399,7 @@ static int rtw_wx_get_essid(struct net_device *dev,
 	wrqu->essid.length = len;
 	wrqu->essid.flags = 1;
 
-	return ret;
+	return 0;
 }
 
 static int rtw_wx_set_rate(struct net_device *dev,
@@ -1717,7 +1717,7 @@ static int rtw_wx_get_enc(struct net_device *dev,
 			    struct iw_request_info *info,
 			    union iwreq_data *wrqu, char *keybuf)
 {
-	uint key, ret = 0;
+	uint key;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct iw_point *erq = &wrqu->encoding;
 	struct	mlme_priv	*pmlmepriv = &padapter->mlmepriv;
@@ -1777,8 +1777,7 @@ static int rtw_wx_get_enc(struct net_device *dev,
 		break;
 	}
 
-
-	return ret;
+	return 0;
 }
 
 static int rtw_wx_get_power(struct net_device *dev,
@@ -2312,7 +2311,6 @@ static int rtw_p2p_set_go_nego_ssid(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2320,7 +2318,7 @@ static int rtw_p2p_set_go_nego_ssid(struct net_device *dev,
 	memcpy(pwdinfo->nego_ssid, extra, strlen(extra));
 	pwdinfo->nego_ssidlen = strlen(extra);
 
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_set_intent(struct net_device *dev,
@@ -2460,7 +2458,6 @@ static int rtw_p2p_setDN(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2469,14 +2466,13 @@ static int rtw_p2p_setDN(struct net_device *dev,
 	memcpy(pwdinfo->device_name, extra, wrqu->data.length - 1);
 	pwdinfo->device_name_len = wrqu->data.length - 1;
 
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_status(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2491,7 +2487,7 @@ static int rtw_p2p_get_status(struct net_device *dev,
 	sprintf(extra, "\n\nStatus =%.2d\n", rtw_p2p_state(pwdinfo));
 	wrqu->data.length = strlen(extra);
 
-	return ret;
+	return 0;
 }
 
 /*	Commented by Albert 20110520 */
@@ -2503,20 +2499,18 @@ static int rtw_p2p_get_req_cm(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
 	sprintf(extra, "\n\nCM =%s\n", pwdinfo->rx_prov_disc_info.strconfig_method_desc_of_prov_disc_req);
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_role(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2526,14 +2520,13 @@ static int rtw_p2p_get_role(struct net_device *dev,
 
 	sprintf(extra, "\n\nRole =%.2d\n", rtw_p2p_role(pwdinfo));
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_peer_ifaddr(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2543,7 +2536,7 @@ static int rtw_p2p_get_peer_ifaddr(struct net_device *dev,
 	sprintf(extra, "\nMAC %pM",
 		pwdinfo->p2p_peer_interface_addr);
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_peer_devaddr(struct net_device *dev,
@@ -2551,7 +2544,6 @@ static int rtw_p2p_get_peer_devaddr(struct net_device *dev,
 			       union iwreq_data *wrqu, char *extra)
 
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2561,7 +2553,7 @@ static int rtw_p2p_get_peer_devaddr(struct net_device *dev,
 	sprintf(extra, "\n%pM",
 		pwdinfo->rx_prov_disc_info.peerDevAddr);
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_peer_devaddr_by_invitation(struct net_device *dev,
@@ -2569,7 +2561,6 @@ static int rtw_p2p_get_peer_devaddr_by_invitation(struct net_device *dev,
 			       union iwreq_data *wrqu, char *extra)
 
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2579,7 +2570,7 @@ static int rtw_p2p_get_peer_devaddr_by_invitation(struct net_device *dev,
 	sprintf(extra, "\nMAC %pM",
 		pwdinfo->p2p_peer_device_addr);
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_groupid(struct net_device *dev,
@@ -2587,7 +2578,6 @@ static int rtw_p2p_get_groupid(struct net_device *dev,
 			       union iwreq_data *wrqu, char *extra)
 
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2597,7 +2587,7 @@ static int rtw_p2p_get_groupid(struct net_device *dev,
 		pwdinfo->groupid_info.go_device_addr[4], pwdinfo->groupid_info.go_device_addr[5],
 		pwdinfo->groupid_info.ssid);
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_op_ch(struct net_device *dev,
@@ -2605,7 +2595,6 @@ static int rtw_p2p_get_op_ch(struct net_device *dev,
 			       union iwreq_data *wrqu, char *extra)
 
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -2613,14 +2602,13 @@ static int rtw_p2p_get_op_ch(struct net_device *dev,
 
 	sprintf(extra, "\n\nOp_ch =%.2d\n", pwdinfo->operating_channel);
 	wrqu->data.length = strlen(extra);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_wps_configmethod(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	u8 peerMAC[ETH_ALEN] = {0x00};
 	int jj, kk;
@@ -2681,14 +2669,13 @@ static int rtw_p2p_get_wps_configmethod(struct net_device *dev,
 
 	if (copy_to_user(wrqu->data.pointer, attr_content_str, 6 + 17))
 		return -EFAULT;
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_go_device_address(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	u8 peerMAC[ETH_ALEN] = {0x00};
 	int jj, kk;
@@ -2764,14 +2751,13 @@ static int rtw_p2p_get_go_device_address(struct net_device *dev,
 
 	if (copy_to_user(wrqu->data.pointer, go_devadd_str, 10 + 17))
 		return -EFAULT;
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_device_type(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	u8 peerMAC[ETH_ALEN] = {0x00};
 	int jj, kk;
@@ -2840,14 +2826,13 @@ static int rtw_p2p_get_device_type(struct net_device *dev,
 		return -EFAULT;
 	}
 
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_device_name(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	u8 peerMAC[ETH_ALEN] = {0x00};
 	int jj, kk;
@@ -2906,14 +2891,13 @@ static int rtw_p2p_get_device_name(struct net_device *dev,
 
 	if (copy_to_user(wrqu->data.pointer, dev_name_str, 5 + ((dev_len > 17) ? dev_len : 17)))
 		return -EFAULT;
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get_invitation_procedure(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	u8 peerMAC[ETH_ALEN] = {0x00};
 	int jj, kk;
@@ -2982,7 +2966,7 @@ static int rtw_p2p_get_invitation_procedure(struct net_device *dev,
 	}
 	if (copy_to_user(wrqu->data.pointer, inv_proc_str, 8 + 17))
 		return -EFAULT;
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_connect(struct net_device *dev,
@@ -3068,7 +3052,6 @@ static int rtw_p2p_invite_req(struct net_device *dev,
 			      struct iw_request_info *info,
 			      union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 	int jj, kk;
@@ -3092,12 +3075,12 @@ static int rtw_p2p_invite_req(struct net_device *dev,
 
 	if (wrqu->data.length <=  37) {
 		DBG_88E("[%s] Wrong format!\n", __func__);
-		return ret;
+		return 0;
 	}
 
 	if (rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE)) {
 		DBG_88E("[%s] WiFi Direct is disable!\n", __func__);
-		return ret;
+		return 0;
 	} else {
 		/*	Reset the content of struct tx_invite_req_info */
 		pinvite_req_info->benable = false;
@@ -3170,14 +3153,13 @@ static int rtw_p2p_invite_req(struct net_device *dev,
 	} else {
 		DBG_88E("[%s] NOT Found in the Scanning Queue!\n", __func__);
 	}
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_set_persistent(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -3189,7 +3171,7 @@ static int rtw_p2p_set_persistent(struct net_device *dev,
 
 	if (rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE)) {
 		DBG_88E("[%s] WiFi Direct is disable!\n", __func__);
-		return ret;
+		return 0;
 	} else {
 		if (extra[0] == '0')	/*	Disable the persistent group function. */
 			pwdinfo->persistent_supported = false;
@@ -3199,14 +3181,13 @@ static int rtw_p2p_set_persistent(struct net_device *dev,
 			pwdinfo->persistent_supported = false;
 	}
 	pr_info("[%s] persistent_supported = %d\n", __func__, pwdinfo->persistent_supported);
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_prov_disc(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 	u8 peerMAC[ETH_ALEN] = {0x00};
@@ -3232,7 +3213,7 @@ static int rtw_p2p_prov_disc(struct net_device *dev,
 
 	if (pwdinfo->p2p_state == P2P_STATE_NONE) {
 		DBG_88E("[%s] WiFi Direct is disable!\n", __func__);
-		return ret;
+		return 0;
 	} else {
 		/*	Reset the content of struct tx_provdisc_req_info excluded the wps_config_method_request. */
 		memset(pwdinfo->tx_prov_disc_info.peerDevAddr, 0x00, ETH_ALEN);
@@ -3256,7 +3237,7 @@ static int rtw_p2p_prov_disc(struct net_device *dev,
 		pwdinfo->tx_prov_disc_info.wps_config_method_request = WPS_CM_LABEL;
 	} else {
 		DBG_88E("[%s] Unknown WPS config methodn", __func__);
-		return ret;
+		return 0;
 	}
 
 	spin_lock_bh(&pmlmepriv->scanned_queue.lock);
@@ -3328,7 +3309,7 @@ static int rtw_p2p_prov_disc(struct net_device *dev,
 	} else {
 		DBG_88E("[%s] NOT Found in the Scanning Queue!\n", __func__);
 	}
-	return ret;
+	return 0;
 }
 
 /*	This function is used to inform the driver the user had specified the pin code value or pbc */
@@ -3338,7 +3319,6 @@ static int rtw_p2p_got_wpsinfo(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
 
@@ -3359,15 +3339,13 @@ static int rtw_p2p_got_wpsinfo(struct net_device *dev,
 		pwdinfo->ui_got_wps_info = P2P_GOT_WPSINFO_PBC;
 	else
 		pwdinfo->ui_got_wps_info = P2P_NO_WPSINFO;
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_set(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
-
 	DBG_88E("[%s] extra = %s\n", __func__, extra);
 	if (!memcmp(extra, "enable =", 7)) {
 		rtw_wext_p2p_enable(dev, info, wrqu, &extra[7]);
@@ -3415,15 +3393,13 @@ static int rtw_p2p_set(struct net_device *dev,
 		rtw_p2p_set_persistent(dev, info, wrqu, &extra[11]);
 	}
 
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
-
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 
 	if (padapter->bShowGetP2PState)
@@ -3447,15 +3423,13 @@ static int rtw_p2p_get(struct net_device *dev,
 	} else if (!memcmp(wrqu->data.pointer, "op_ch", 5)) {
 		rtw_p2p_get_op_ch(dev, info, wrqu, extra);
 	}
-	return ret;
+	return 0;
 }
 
 static int rtw_p2p_get2(struct net_device *dev,
 			       struct iw_request_info *info,
 			       union iwreq_data *wrqu, char *extra)
 {
-	int ret = 0;
-
 	DBG_88E("[%s] extra = %s\n", __func__, (char *)wrqu->data.pointer);
 	if (!memcmp(extra, "wpsCM =", 6)) {
 		wrqu->data.length -= 6;
@@ -3474,7 +3448,7 @@ static int rtw_p2p_get2(struct net_device *dev,
 		rtw_p2p_get_invitation_procedure(dev, info, wrqu, &extra[8]);
 	}
 
-	return ret;
+	return 0;
 }
 
 static int rtw_rereg_nd_name(struct net_device *dev,
-- 
2.34.1