staging:rtl8192e: Usage count off by one

The rtllib driver is not calling try_module_get() when loading the
encryption modules. Because of this, you can never remove the module
once you have used it one (i.e. bring up the wireless interface).

Signed-off-by: Sean MacLennan <seanm@seanm.ca>
Tested-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib_softmac.c

@@ -3328,7 +3328,7 @@ static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
 			goto done;
 		}
 		new_crypt->ops = ops;
-		if (new_crypt->ops)
+		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 			new_crypt->priv =
 				new_crypt->ops->init(param->u.crypt.idx);
 

drivers/staging/rtl8192e/rtllib_wx.c

@@ -623,7 +623,7 @@ int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
 			goto done;
 		}
 		new_crypt->ops = ops;
-		if (new_crypt->ops)
+		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 			new_crypt->priv = new_crypt->ops->init(idx);
 
 		if (new_crypt->priv == NULL) {