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Date: Sun, 2 Jan 2022 17:58:29 +0100
From: Martin Kaiser <martin@...ser.cx>
To: Abdun Nihaal <abdun.nihaal@...il.com>
Cc: gregkh@...uxfoundation.org, Larry.Finger@...inger.net,
phil@...lpotter.co.uk, straube.linux@...il.com,
linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: r8188eu: remove unneeded ret variables
Thus wrote Abdun Nihaal (abdun.nihaal@...il.com):
> 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@...il.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
Acked-by: Martin Kaiser <martin@...ser.cx>
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