prism54: remove questionable down_interruptible usage
[powerpc.git] / drivers / net / wireless / prism54 / isl_ioctl.c
index 283be4a..1b595a6 100644 (file)
@@ -165,8 +165,7 @@ prism54_update_stats(struct work_struct *work)
        struct obj_bss bss, *bss2;
        union oid_res_t r;
 
-       if (down_interruptible(&priv->stats_sem))
-               return;
+       down(&priv->stats_sem);
 
 /* Noise floor.
  * I'm not sure if the unit is dBm.
@@ -1118,7 +1117,7 @@ prism54_set_encode(struct net_device *ndev, struct iw_request_info *info,
                            mgt_set_request(priv, DOT11_OID_DEFKEYID, 0,
                                            &index);
                } else {
-                       if (!dwrq->flags & IW_ENCODE_MODE) {
+                       if (!(dwrq->flags & IW_ENCODE_MODE)) {
                                /* we cannot do anything. Complain. */
                                return -EINVAL;
                        }
@@ -1753,7 +1752,7 @@ prism54_get_oid(struct net_device *ndev, struct iw_request_info *info,
        int rvalue;
        enum oid_num_t n = dwrq->flags;
 
-       rvalue = mgt_get_request((islpci_private *) ndev->priv, n, 0, NULL, &r);
+       rvalue = mgt_get_request(netdev_priv(ndev), n, 0, NULL, &r);
        dwrq->length = mgt_response_to_str(n, &r, extra);
        if ((isl_oid[n].flags & OID_FLAG_TYPE) != OID_TYPE_U32)
                kfree(r.ptr);
@@ -1766,7 +1765,7 @@ prism54_set_u32(struct net_device *ndev, struct iw_request_info *info,
 {
        u32 oid = uwrq[0], u = uwrq[1];
 
-       return mgt_set_request((islpci_private *) ndev->priv, oid, 0, &u);
+       return mgt_set_request(netdev_priv(ndev), oid, 0, &u);
 }
 
 static int
@@ -1775,7 +1774,7 @@ prism54_set_raw(struct net_device *ndev, struct iw_request_info *info,
 {
        u32 oid = dwrq->flags;
 
-       return mgt_set_request((islpci_private *) ndev->priv, oid, 0, extra);
+       return mgt_set_request(netdev_priv(ndev), oid, 0, extra);
 }
 
 void
@@ -1793,8 +1792,7 @@ prism54_clear_mac(struct islpci_acl *acl)
        struct list_head *ptr, *next;
        struct mac_entry *entry;
 
-       if (down_interruptible(&acl->sem))
-               return;
+       down(&acl->sem);
 
        if (acl->size == 0) {
                up(&acl->sem);
@@ -1853,7 +1851,6 @@ prism54_del_mac(struct net_device *ndev, struct iw_request_info *info,
        islpci_private *priv = netdev_priv(ndev);
        struct islpci_acl *acl = &priv->acl;
        struct mac_entry *entry;
-       struct list_head *ptr;
        struct sockaddr *addr = (struct sockaddr *) extra;
 
        if (addr->sa_family != ARPHRD_ETHER)
@@ -1861,11 +1858,9 @@ prism54_del_mac(struct net_device *ndev, struct iw_request_info *info,
 
        if (down_interruptible(&acl->sem))
                return -ERESTARTSYS;
-       for (ptr = acl->mac_list.next; ptr != &acl->mac_list; ptr = ptr->next) {
-               entry = list_entry(ptr, struct mac_entry, _list);
-
+       list_for_each_entry(entry, &acl->mac_list, _list) {
                if (memcmp(entry->addr, addr->sa_data, ETH_ALEN) == 0) {
-                       list_del(ptr);
+                       list_del(&entry->_list);
                        acl->size--;
                        kfree(entry);
                        up(&acl->sem);
@@ -1883,7 +1878,6 @@ prism54_get_mac(struct net_device *ndev, struct iw_request_info *info,
        islpci_private *priv = netdev_priv(ndev);
        struct islpci_acl *acl = &priv->acl;
        struct mac_entry *entry;
-       struct list_head *ptr;
        struct sockaddr *dst = (struct sockaddr *) extra;
 
        dwrq->length = 0;
@@ -1891,9 +1885,7 @@ prism54_get_mac(struct net_device *ndev, struct iw_request_info *info,
        if (down_interruptible(&acl->sem))
                return -ERESTARTSYS;
 
-       for (ptr = acl->mac_list.next; ptr != &acl->mac_list; ptr = ptr->next) {
-               entry = list_entry(ptr, struct mac_entry, _list);
-
+       list_for_each_entry(entry, &acl->mac_list, _list) {
                memcpy(dst->sa_data, entry->addr, ETH_ALEN);
                dst->sa_family = ARPHRD_ETHER;
                dwrq->length++;
@@ -1960,7 +1952,6 @@ prism54_get_policy(struct net_device *ndev, struct iw_request_info *info,
 static int
 prism54_mac_accept(struct islpci_acl *acl, char *mac)
 {
-       struct list_head *ptr;
        struct mac_entry *entry;
        int res = 0;
 
@@ -1972,8 +1963,7 @@ prism54_mac_accept(struct islpci_acl *acl, char *mac)
                return 1;
        }
 
-       for (ptr = acl->mac_list.next; ptr != &acl->mac_list; ptr = ptr->next) {
-               entry = list_entry(ptr, struct mac_entry, _list);
+       list_for_each_entry(entry, &acl->mac_list, _list) {
                if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
                        res = 1;
                        break;
@@ -2037,12 +2027,12 @@ static void
 format_event(islpci_private *priv, char *dest, const char *str,
             const struct obj_mlme *mlme, u16 *length, int error)
 {
-       const u8 *a = mlme->address;
+       DECLARE_MAC_BUF(mac);
        int n = snprintf(dest, IW_CUSTOM_MAX,
-                        "%s %s %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X %s (%2.2X)",
+                        "%s %s %s %s (%2.2X)",
                         str,
                         ((priv->iw_mode == IW_MODE_MASTER) ? "from" : "to"),
-                        a[0], a[1], a[2], a[3], a[4], a[5],
+                        print_mac(mac, mlme->address),
                         (error ? (mlme->code ? " : REJECTED " : " : ACCEPTED ")
                          : ""), mlme->code);
        BUG_ON(n > IW_CUSTOM_MAX);
@@ -2113,21 +2103,18 @@ struct ieee80211_beacon_phdr {
 #define WLAN_EID_GENERIC 0xdd
 static u8 wpa_oid[4] = { 0x00, 0x50, 0xf2, 1 };
 
-#define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
-#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
-
 static void
 prism54_wpa_bss_ie_add(islpci_private *priv, u8 *bssid,
                       u8 *wpa_ie, size_t wpa_ie_len)
 {
        struct list_head *ptr;
        struct islpci_bss_wpa_ie *bss = NULL;
+       DECLARE_MAC_BUF(mac);
 
        if (wpa_ie_len > MAX_WPA_IE_LEN)
                wpa_ie_len = MAX_WPA_IE_LEN;
 
-       if (down_interruptible(&priv->wpa_sem))
-               return;
+       down(&priv->wpa_sem);
 
        /* try to use existing entry */
        list_for_each(ptr, &priv->bss_wpa_list) {
@@ -2162,8 +2149,8 @@ prism54_wpa_bss_ie_add(islpci_private *priv, u8 *bssid,
                bss->wpa_ie_len = wpa_ie_len;
                bss->last_update = jiffies;
        } else {
-               printk(KERN_DEBUG "Failed to add BSS WPA entry for " MACSTR
-                      "\n", MAC2STR(bssid));
+               printk(KERN_DEBUG "Failed to add BSS WPA entry for "
+                      "%s\n", print_mac(mac, bssid));
        }
 
        /* expire old entries from WPA list */
@@ -2188,8 +2175,7 @@ prism54_wpa_bss_ie_get(islpci_private *priv, u8 *bssid, u8 *wpa_ie)
        struct islpci_bss_wpa_ie *bss = NULL;
        size_t len = 0;
 
-       if (down_interruptible(&priv->wpa_sem))
-               return 0;
+       down(&priv->wpa_sem);
 
        list_for_each(ptr, &priv->bss_wpa_list) {
                bss = list_entry(ptr, struct islpci_bss_wpa_ie, list);
@@ -2216,11 +2202,9 @@ prism54_wpa_bss_ie_init(islpci_private *priv)
 void
 prism54_wpa_bss_ie_clean(islpci_private *priv)
 {
-       struct list_head *ptr, *n;
+       struct islpci_bss_wpa_ie *bss, *n;
 
-       list_for_each_safe(ptr, n, &priv->bss_wpa_list) {
-               struct islpci_bss_wpa_ie *bss;
-               bss = list_entry(ptr, struct islpci_bss_wpa_ie, list);
+       list_for_each_entry_safe(bss, n, &priv->bss_wpa_list, list) {
                kfree(bss);
        }
 }
@@ -2231,6 +2215,7 @@ prism54_process_bss_data(islpci_private *priv, u32 oid, u8 *addr,
 {
        struct ieee80211_beacon_phdr *hdr;
        u8 *pos, *end;
+       DECLARE_MAC_BUF(mac);
 
        if (!priv->wpa)
                return;
@@ -2241,7 +2226,7 @@ prism54_process_bss_data(islpci_private *priv, u32 oid, u8 *addr,
        while (pos < end) {
                if (pos + 2 + pos[1] > end) {
                        printk(KERN_DEBUG "Parsing Beacon/ProbeResp failed "
-                              "for " MACSTR "\n", MAC2STR(addr));
+                              "for %s\n", print_mac(mac, addr));
                        return;
                }
                if (pos[0] == WLAN_EID_GENERIC && pos[1] >= 4 &&
@@ -2280,6 +2265,7 @@ prism54_process_trap_helper(islpci_private *priv, enum oid_num_t oid,
        size_t len = 0; /* u16, better? */
        u8 *payload = NULL, *pos = NULL;
        int ret;
+       DECLARE_MAC_BUF(mac);
 
        /* I think all trapable objects are listed here.
         * Some oids have a EX version. The difference is that they are emitted
@@ -2368,14 +2354,8 @@ prism54_process_trap_helper(islpci_private *priv, enum oid_num_t oid,
                        break;
 
                memcpy(&confirm->address, mlmeex->address, ETH_ALEN);
-               printk(KERN_DEBUG "Authenticate from: address:\t%02x:%02x:%02x:%02x:%02x:%02x\n",
-                               mlmeex->address[0],
-                               mlmeex->address[1],
-                               mlmeex->address[2],
-                               mlmeex->address[3],
-                               mlmeex->address[4],
-                               mlmeex->address[5]
-                               );
+               printk(KERN_DEBUG "Authenticate from: address:\t%s\n",
+                      print_mac(mac, mlmeex->address));
                confirm->id = -1; /* or mlmeex->id ? */
                confirm->state = 0; /* not used */
                confirm->code = 0;
@@ -2420,15 +2400,8 @@ prism54_process_trap_helper(islpci_private *priv, enum oid_num_t oid,
                wpa_ie_len = prism54_wpa_bss_ie_get(priv, mlmeex->address, wpa_ie);
 
                if (!wpa_ie_len) {
-                       printk(KERN_DEBUG "No WPA IE found from "
-                                       "address:\t%02x:%02x:%02x:%02x:%02x:%02x\n",
-                               mlmeex->address[0],
-                               mlmeex->address[1],
-                               mlmeex->address[2],
-                               mlmeex->address[3],
-                               mlmeex->address[4],
-                               mlmeex->address[5]
-                               );
+                       printk(KERN_DEBUG "No WPA IE found from address:\t%s\n",
+                              print_mac(mac, mlmeex->address));
                        kfree(confirm);
                        break;
                }
@@ -2464,15 +2437,8 @@ prism54_process_trap_helper(islpci_private *priv, enum oid_num_t oid,
                wpa_ie_len = prism54_wpa_bss_ie_get(priv, mlmeex->address, wpa_ie);
 
                if (!wpa_ie_len) {
-                       printk(KERN_DEBUG "No WPA IE found from "
-                                       "address:\t%02x:%02x:%02x:%02x:%02x:%02x\n",
-                               mlmeex->address[0],
-                               mlmeex->address[1],
-                               mlmeex->address[2],
-                               mlmeex->address[3],
-                               mlmeex->address[4],
-                               mlmeex->address[5]
-                               );
+                       printk(KERN_DEBUG "No WPA IE found from address:\t%s\n",
+                              print_mac(mac, mlmeex->address));
                        kfree(confirm);
                        break;
                }
@@ -2640,7 +2606,7 @@ prism2_ioctl_set_encryption(struct net_device *dev,
                            mgt_set_request(priv, DOT11_OID_DEFKEYID, 0,
                                            &index);
                } else {
-                       if (!param->u.crypt.flags & IW_ENCODE_MODE) {
+                       if (!(param->u.crypt.flags & IW_ENCODE_MODE)) {
                                /* we cannot do anything. Complain. */
                                return -EINVAL;
                        }
@@ -3249,10 +3215,9 @@ static const iw_handler prism54_private_handler[] = {
 };
 
 const struct iw_handler_def prism54_handler_def = {
-       .num_standard = sizeof (prism54_handler) / sizeof (iw_handler),
-       .num_private = sizeof (prism54_private_handler) / sizeof (iw_handler),
-       .num_private_args =
-           sizeof (prism54_private_args) / sizeof (struct iw_priv_args),
+       .num_standard = ARRAY_SIZE(prism54_handler),
+       .num_private = ARRAY_SIZE(prism54_private_handler),
+       .num_private_args = ARRAY_SIZE(prism54_private_args),
        .standard = (iw_handler *) prism54_handler,
        .private = (iw_handler *) prism54_private_handler,
        .private_args = (struct iw_priv_args *) prism54_private_args,