Staging: rtl8187se/rtl8192e/rtl8192su: allow module unload

On rtl81* additions, they had its wireless stack made builtin instead of
separated modules. But try_module_get/module_put in stack were kept,
they are uneeded with the stack builtin and makes rtl81* modules
impossible to remove on a system with an rtl81* card. request_module
calls are also uneeded with stack builtin, so remove them too.

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/rtl8187se/ieee80211/ieee80211_crypt.c

@@ -53,10 +53,8 @@ void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee,
 
 		list_del(ptr);
 
-		if (entry->ops) {
+		if (entry->ops)
 			entry->ops->deinit(entry->priv);
-			module_put(entry->ops->owner);
-		}
 		kfree(entry);
 	}
 }

drivers/staging/rtl8187se/ieee80211/ieee80211_module.c

@@ -189,10 +189,8 @@ void free_ieee80211(struct net_device *dev)
 	for (i = 0; i < WEP_KEYS; i++) {
 		struct ieee80211_crypt_data *crypt = ieee->crypt[i];
 		if (crypt) {
-			if (crypt->ops) {
+			if (crypt->ops)
 				crypt->ops->deinit(crypt->priv);
-				module_put(crypt->ops->owner);
-			}
 			kfree(crypt);
 			ieee->crypt[i] = NULL;
 		}

drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c

@@ -2839,16 +2839,12 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 		goto skip_host_crypt;
 
 	ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0) {
-		request_module("ieee80211_crypt_wep");
+	if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	} else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0) {
-		request_module("ieee80211_crypt_tkip");
+	else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	} else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0) {
-		request_module("ieee80211_crypt_ccmp");
+	else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	}
 	if (ops == NULL) {
 		printk("unknown crypto alg '%s'\n", param->u.crypt.alg);
 		param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
@@ -2869,7 +2865,7 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 		}
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ops;
-		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+		if (new_crypt->ops)
 			new_crypt->priv =
 				new_crypt->ops->init(param->u.crypt.idx);
 

drivers/staging/rtl8187se/ieee80211/ieee80211_wx.c

@@ -331,12 +331,10 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 			return -ENOMEM;
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ieee80211_get_crypto_ops("WEP");
-		if (!new_crypt->ops) {
-			request_module("ieee80211_crypt_wep");
+		if (!new_crypt->ops)
 			new_crypt->ops = ieee80211_get_crypto_ops("WEP");
-		}
 
-		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+		if (new_crypt->ops)
 			new_crypt->priv = new_crypt->ops->init(key);
 
 		if (!new_crypt->ops || !new_crypt->priv) {
@@ -483,7 +481,7 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
         int i, idx, ret = 0;
         int group_key = 0;
-        const char *alg, *module;
+        const char *alg;
         struct ieee80211_crypto_ops *ops;
         struct ieee80211_crypt_data **crypt;
 
@@ -539,15 +537,12 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
         switch (ext->alg) {
         case IW_ENCODE_ALG_WEP:
                 alg = "WEP";
-                module = "ieee80211_crypt_wep";
                 break;
         case IW_ENCODE_ALG_TKIP:
                 alg = "TKIP";
-                module = "ieee80211_crypt_tkip";
                 break;
         case IW_ENCODE_ALG_CCMP:
                 alg = "CCMP";
-                module = "ieee80211_crypt_ccmp";
                 break;
         default:
                 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
@@ -558,10 +553,8 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
 //	printk("8-09-08-9=====>%s, alg name:%s\n",__func__, alg);
 
 	 ops = ieee80211_get_crypto_ops(alg);
-        if (ops == NULL) {
-                request_module(module);
+        if (ops == NULL)
                 ops = ieee80211_get_crypto_ops(alg);
-        }
         if (ops == NULL) {
                 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
                                    dev->name, ext->alg);
@@ -581,7 +574,7 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
                         goto done;
                 }
                 new_crypt->ops = ops;
-                if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+                if (new_crypt->ops)
                         new_crypt->priv = new_crypt->ops->init(idx);
                 if (new_crypt->priv == NULL) {
                         kfree(new_crypt);

drivers/staging/rtl8192e/ieee80211/ieee80211_crypt.c

@@ -53,14 +53,8 @@ void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee,
 
 		list_del(ptr);
 
-		if (entry->ops) {
+		if (entry->ops)
 			entry->ops->deinit(entry->priv);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-			module_put(entry->ops->owner);
-#else
-			__MOD_DEC_USE_COUNT(entry->ops->owner);
-#endif
-		}
 		kfree(entry);
 	}
 }

drivers/staging/rtl8192e/ieee80211/ieee80211_module.c

@@ -242,14 +242,8 @@ void free_ieee80211(struct net_device *dev)
 	for (i = 0; i < WEP_KEYS; i++) {
 		struct ieee80211_crypt_data *crypt = ieee->crypt[i];
 		if (crypt) {
-			if (crypt->ops) {
+			if (crypt->ops)
 				crypt->ops->deinit(crypt->priv);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-				module_put(crypt->ops->owner);
-#else
-				__MOD_DEC_USE_COUNT(crypt->ops->owner);
-#endif
-			}
 			kfree(crypt);
 			ieee->crypt[i] = NULL;
 		}

drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c

@@ -3284,17 +3284,14 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 		goto skip_host_crypt;
 
 	ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0) {
-		request_module("ieee80211_crypt_wep");
+	if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-		//set WEP40 first, it will be modified according to WEP104 or WEP40 at other place
-	} else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0) {
-		request_module("ieee80211_crypt_tkip");
+		/* set WEP40 first, it will be modified according to WEP104 or
+		 * WEP40 at other place */
+	else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	} else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0) {
-		request_module("ieee80211_crypt_ccmp");
+	else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	}
 	if (ops == NULL) {
 		printk("unknown crypto alg '%s'\n", param->u.crypt.alg);
 		param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
@@ -3315,11 +3312,7 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 		}
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ops;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
-#else
-		if (new_crypt->ops && try_inc_mod_count(new_crypt->ops->owner))
-#endif
+		if (new_crypt->ops)
 			new_crypt->priv =
 				new_crypt->ops->init(param->u.crypt.idx);
 

drivers/staging/rtl8192e/ieee80211/ieee80211_wx.c

@@ -482,15 +482,9 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 			return -ENOMEM;
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ieee80211_get_crypto_ops("WEP");
-		if (!new_crypt->ops) {
-			request_module("ieee80211_crypt_wep");
+		if (!new_crypt->ops)
 			new_crypt->ops = ieee80211_get_crypto_ops("WEP");
-		}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
-#else
-		if (new_crypt->ops && try_inc_mod_count(new_crypt->ops->owner))
-#endif
+		if (new_crypt->ops)
 			new_crypt->priv = new_crypt->ops->init(key);
 
 		if (!new_crypt->ops || !new_crypt->priv) {
@@ -644,7 +638,7 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
         int i, idx;
         int group_key = 0;
-        const char *alg, *module;
+        const char *alg;
         struct ieee80211_crypto_ops *ops;
         struct ieee80211_crypt_data **crypt;
 
@@ -711,15 +705,12 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
         switch (ext->alg) {
         case IW_ENCODE_ALG_WEP:
                 alg = "WEP";
-                module = "ieee80211_crypt_wep";
                 break;
         case IW_ENCODE_ALG_TKIP:
                 alg = "TKIP";
-                module = "ieee80211_crypt_tkip";
                 break;
         case IW_ENCODE_ALG_CCMP:
                 alg = "CCMP";
-                module = "ieee80211_crypt_ccmp";
                 break;
         default:
                 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
@@ -730,10 +721,8 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
 	printk("alg name:%s\n",alg);
 
 	 ops = ieee80211_get_crypto_ops(alg);
-        if (ops == NULL) {
-                request_module(module);
+        if (ops == NULL)
                 ops = ieee80211_get_crypto_ops(alg);
-        }
         if (ops == NULL) {
                 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
                                    dev->name, ext->alg);
@@ -758,7 +747,7 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
                         goto done;
                 }
                 new_crypt->ops = ops;
-                if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+                if (new_crypt->ops)
                         new_crypt->priv = new_crypt->ops->init(idx);
                 if (new_crypt->priv == NULL) {
                         kfree(new_crypt);

drivers/staging/rtl8192su/ieee80211/ieee80211_crypt.c

@@ -53,10 +53,8 @@ void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee,
 
 		list_del(ptr);
 
-		if (entry->ops) {
+		if (entry->ops)
 			entry->ops->deinit(entry->priv);
-			module_put(entry->ops->owner);
-		}
 		kfree(entry);
 	}
 }

drivers/staging/rtl8192su/ieee80211/ieee80211_module.c

@@ -216,10 +216,8 @@ void free_ieee80211(struct net_device *dev)
 	for (i = 0; i < WEP_KEYS; i++) {
 		struct ieee80211_crypt_data *crypt = ieee->crypt[i];
 		if (crypt) {
-			if (crypt->ops) {
+			if (crypt->ops)
 				crypt->ops->deinit(crypt->priv);
-				module_put(crypt->ops->owner);
-			}
 			kfree(crypt);
 			ieee->crypt[i] = NULL;
 		}

drivers/staging/rtl8192su/ieee80211/ieee80211_softmac.c

@@ -3026,17 +3026,14 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 		goto skip_host_crypt;
 
 	ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0) {
-		request_module("ieee80211_crypt_wep");
+	if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-		//set WEP40 first, it will be modified according to WEP104 or WEP40 at other place
-	} else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0) {
-		request_module("ieee80211_crypt_tkip");
+		/* set WEP40 first, it will be modified according to WEP104 or
+		 * WEP40 at other place */
+	else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	} else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0) {
-		request_module("ieee80211_crypt_ccmp");
+	else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0)
 		ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
-	}
 	if (ops == NULL) {
 		printk("unknown crypto alg '%s'\n", param->u.crypt.alg);
 		param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
@@ -3058,7 +3055,7 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ops;
 
-		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+		if (new_crypt->ops)
 			new_crypt->priv =
 				new_crypt->ops->init(param->u.crypt.idx);
 

drivers/staging/rtl8192su/ieee80211/ieee80211_wx.c

@@ -358,11 +358,9 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 			return -ENOMEM;
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ieee80211_get_crypto_ops("WEP");
-		if (!new_crypt->ops) {
-			request_module("ieee80211_crypt_wep");
+		if (!new_crypt->ops)
 			new_crypt->ops = ieee80211_get_crypto_ops("WEP");
-		}
-		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+		if (new_crypt->ops)
 			new_crypt->priv = new_crypt->ops->init(key);
 
 		if (!new_crypt->ops || !new_crypt->priv) {
@@ -507,7 +505,7 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
         int i, idx;
         int group_key = 0;
-        const char *alg, *module;
+        const char *alg;
         struct ieee80211_crypto_ops *ops;
         struct ieee80211_crypt_data **crypt;
 
@@ -570,15 +568,12 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
         switch (ext->alg) {
         case IW_ENCODE_ALG_WEP:
                 alg = "WEP";
-                module = "ieee80211_crypt_wep";
                 break;
         case IW_ENCODE_ALG_TKIP:
                 alg = "TKIP";
-                module = "ieee80211_crypt_tkip";
                 break;
         case IW_ENCODE_ALG_CCMP:
                 alg = "CCMP";
-                module = "ieee80211_crypt_ccmp";
                 break;
         default:
                 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
@@ -589,10 +584,8 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
 	printk("alg name:%s\n",alg);
 
 	 ops = ieee80211_get_crypto_ops(alg);
-        if (ops == NULL) {
-                request_module("%s", module);
+        if (ops == NULL)
                 ops = ieee80211_get_crypto_ops(alg);
-        }
         if (ops == NULL) {
                 IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
                                    dev->name, ext->alg);
@@ -612,7 +605,7 @@ int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
                         goto done;
                 }
                 new_crypt->ops = ops;
-                if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+                if (new_crypt->ops)
                         new_crypt->priv = new_crypt->ops->init(idx);
                 if (new_crypt->priv == NULL) {
                         kfree(new_crypt);