staging: r8712u: Most return-values changed from -1 to proper errno macros.

The ioctl handlers were frequently returning -1 upon failure. Most of
these have now been changed to proper errno macros.
The few remaining ones have been left untouched because either the
handler is not called (and so cannot be tested), or the function never
fails (and so cannot be system-tested), or requires new code to
distinguish its failures.

Signed-off-by: Ali Bahar <ali@internetDog.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/rtl8712/rtl871x_ioctl_linux.c

@@ -530,7 +530,7 @@ static int r871x_set_wpa_ie(struct _adapter *padapter, char *pie,
 		memcpy(buf, pie , ielen);
 		pos = buf;
 		if (ielen < RSN_HEADER_LEN) {
-			ret  = -1;
+			ret  = -EINVAL;
 			goto exit;
 		}
 		if (r8712_parse_wpa_ie(buf, ielen, &group_cipher,
@@ -740,8 +740,9 @@ static int r8711_wx_get_freq(struct net_device *dev,
 			       pcur_bss->Configuration.DSConfig-1] * 100000;
 		wrqu->freq.e = 1;
 		wrqu->freq.i = pcur_bss->Configuration.DSConfig;
-	} else
-		return -1;
+	} else {
+		return -ENOLINK;
+	}
 	return 0;
 }
 
@@ -772,8 +773,8 @@ static int r8711_wx_set_mode(struct net_device *dev,
 		r8712_setopmode_cmd(padapter, networkType);
 	else
 		r8712_setopmode_cmd(padapter, Ndis802_11AutoUnknown);
-	if (!r8712_set_802_11_infrastructure_mode(padapter, networkType))
-		return -1;
+
+	r8712_set_802_11_infrastructure_mode(padapter, networkType);
 	return 0;
 }
 
@@ -1090,7 +1091,7 @@ static int r8711_wx_set_wap(struct net_device *dev,
 	enum NDIS_802_11_AUTHENTICATION_MODE	authmode;
 
 	if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY) == true)
-		return -1;
+		return -EBUSY;
 	if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
 		return ret;
 	if (temp->sa_family != ARPHRD_ETHER)
@@ -1107,16 +1108,15 @@ static int r8711_wx_set_wap(struct net_device *dev,
 		pmlmepriv->pscanned = get_next(pmlmepriv->pscanned);
 		dst_bssid = pnetwork->network.MacAddress;
 		if (!memcmp(dst_bssid, temp->sa_data, ETH_ALEN)) {
-			if (r8712_set_802_11_infrastructure_mode(padapter,
-			    pnetwork->network.InfrastructureMode) == false)
-				ret = -1;
+			r8712_set_802_11_infrastructure_mode(padapter,
+			    pnetwork->network.InfrastructureMode);
 			break;
 		}
 	}
 	spin_unlock_irqrestore(&queue->lock, irqL);
 	if (!ret) {
 		if (!r8712_set_802_11_authentication_mode(padapter, authmode))
-			ret = -1;
+			ret = -ENOMEM;
 		else {
 			if (!r8712_set_802_11_bssid(padapter, temp->sa_data))
 				ret = -1;
@@ -1191,7 +1191,7 @@ static int r8711_wx_set_scan(struct net_device *dev,
 		return -1;
 	}
 	if (padapter->bup == false)
-		return -1;
+		return -ENETDOWN;
 	if (padapter->hw_init_completed == false)
 		return -1;
 	if ((check_fwstate(pmlmepriv, _FW_UNDER_SURVEY|_FW_UNDER_LINKING)) ||
@@ -1294,7 +1294,7 @@ static int r8711_wx_set_essid(struct net_device *dev,
 	u32 len;
 
 	if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY))
-		return -1;
+		return -EBUSY;
 	if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING))
 		return 0;
 	if (wrqu->essid.length > IW_ESSID_MAX_SIZE)
@@ -1330,10 +1330,9 @@ static int r8711_wx_set_essid(struct net_device *dev,
 						continue;
 				}
 
-				if (!r8712_set_802_11_infrastructure_mode(
+				r8712_set_802_11_infrastructure_mode(
 				     padapter,
-				     pnetwork->network.InfrastructureMode))
-					return -1;
+				     pnetwork->network.InfrastructureMode);
 				break;
 			}
 		}
@@ -1357,8 +1356,9 @@ static int r8711_wx_get_essid(struct net_device *dev,
 		wrqu->essid.length = len;
 		memcpy(extra, pcur_bss->Ssid.Ssid, len);
 		wrqu->essid.flags = 1;
-	} else
-		ret = -1;
+	} else {
+		ret = -ENOLINK;
+	}
 	return ret;
 }
 
@@ -1430,7 +1430,7 @@ set_rate:
 			datarates[i] = 0xff;
 	}
 	if (r8712_setdatarate_cmd(padapter, datarates) != _SUCCESS)
-		ret = -1;
+		ret = -ENOMEM;
 	return ret;
 }
 
@@ -1492,7 +1492,7 @@ static int r8711_wx_get_rate(struct net_device *dev,
 			wrqu->bitrate.value = max_rate * 500000;
 		}
 	} else
-		return -1;
+		return -ENOLINK;
 	return 0;
 }
 
@@ -1822,7 +1822,7 @@ static int r871x_wx_set_enc_ext(struct net_device *dev,
 	param_len = sizeof(struct ieee_param) + pext->key_len;
 	param = (struct ieee_param *)_malloc(param_len);
 	if (param == NULL)
-		return -1;
+		return -ENOMEM;
 	memset(param, 0, param_len);
 	param->cmd = IEEE_CMD_SET_ENCRYPTION;
 	memset(param->sta_addr, 0xff, ETH_ALEN);
@@ -1840,7 +1840,7 @@ static int r871x_wx_set_enc_ext(struct net_device *dev,
 		alg_name = "CCMP";
 		break;
 	default:
-		return -1;
+		return -EINVAL;
 	}
 	strncpy((char *)param->u.crypt.alg, alg_name, IEEE_CRYPT_ALG_NAME_LEN);
 	if (pext->ext_flags & IW_ENCODE_EXT_GROUP_KEY)
@@ -1906,7 +1906,7 @@ static int dummy(struct net_device *dev,
 		struct iw_request_info *a,
 		union iwreq_data *wrqu, char *b)
 {
-	return -1;
+	return -ENOSYS;
 }
 
 static int r8711_drvext_hdl(struct net_device *dev,

drivers/staging/rtl8712/rtl871x_ioctl_set.c

@@ -243,7 +243,7 @@ done:
 	spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
 }
 
-u8 r8712_set_802_11_infrastructure_mode(struct _adapter *padapter,
+void r8712_set_802_11_infrastructure_mode(struct _adapter *padapter,
 	enum NDIS_802_11_NETWORK_INFRASTRUCTURE networktype)
 {
 	unsigned long irqL;
@@ -290,7 +290,6 @@ u8 r8712_set_802_11_infrastructure_mode(struct _adapter *padapter,
 		}
 		spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
 	}
-	return true;
 }
 
 u8 r8712_set_802_11_disassociate(struct _adapter *padapter)

drivers/staging/rtl8712/rtl871x_ioctl_set.h

@@ -47,7 +47,7 @@ u8 r8712_set_802_11_disassociate(struct _adapter *padapter);
 
 u8 r8712_set_802_11_bssid_list_scan(struct _adapter *padapter);
 
-u8 r8712_set_802_11_infrastructure_mode(struct _adapter *padapter,
+void r8712_set_802_11_infrastructure_mode(struct _adapter *padapter,
 			enum NDIS_802_11_NETWORK_INFRASTRUCTURE networktype);
 
 void r8712_set_802_11_ssid(struct _adapter *padapter,