From c55519ff75224222f4668c92ae3733059269f575 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Wed, 17 Dec 2008 17:04:23 -0800
Subject: Staging: add rt2870 wireless driver

This is the Ralink RT2870 driver from the company that does horrible
things like reading a config file from /etc.  However, the driver that
is currently under development from the wireless development community
is not working at all yet, so distros and users are using this version
instead (quite common hardware on a lot of netbook machines).

So here is this driver, for now, until the wireless developers get a
"clean" version into the main tree, or until this version is cleaned up
sufficiently to move out of the staging tree.

Ported to the Linux build system and cleaned up a bit already by me.

Cc: Linux wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/staging/rt2870/link_list.h | 134 +++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 drivers/staging/rt2870/link_list.h

(limited to 'drivers/staging/rt2870/link_list.h')

diff --git a/drivers/staging/rt2870/link_list.h b/drivers/staging/rt2870/link_list.h
new file mode 100644
index 000000000000..f6521133fd5e
--- /dev/null
+++ b/drivers/staging/rt2870/link_list.h
@@ -0,0 +1,134 @@
+/*
+ *************************************************************************
+ * Ralink Tech Inc.
+ * 5F., No.36, Taiyuan St., Jhubei City,
+ * Hsinchu County 302,
+ * Taiwan, R.O.C.
+ *
+ * (c) Copyright 2002-2007, Ralink Technology, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify  *
+ * it under the terms of the GNU General Public License as published by  *
+ * the Free Software Foundation; either version 2 of the License, or     *
+ * (at your option) any later version.                                   *
+ *                                                                       *
+ * This program is distributed in the hope that it will be useful,       *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ * GNU General Public License for more details.                          *
+ *                                                                       *
+ * You should have received a copy of the GNU General Public License     *
+ * along with this program; if not, write to the                         *
+ * Free Software Foundation, Inc.,                                       *
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *                                                                       *
+ *************************************************************************
+ */
+
+#ifndef __LINK_LIST_H__
+#define __LINK_LIST_H__
+
+typedef struct _LIST_ENTRY
+{
+	struct _LIST_ENTRY *pNext;
+} LIST_ENTRY, *PLIST_ENTRY;
+
+typedef struct _LIST_HEADR
+{
+	PLIST_ENTRY pHead;
+	PLIST_ENTRY pTail;
+	UCHAR size;
+} LIST_HEADER, *PLIST_HEADER;
+
+static inline VOID initList(
+	IN PLIST_HEADER pList)
+{
+	pList->pHead = pList->pTail = NULL;
+	pList->size = 0;
+	return;
+}
+
+static inline VOID insertTailList(
+	IN PLIST_HEADER pList,
+	IN PLIST_ENTRY pEntry)
+{
+	pEntry->pNext = NULL;
+	if (pList->pTail)
+		pList->pTail->pNext = pEntry;
+	else
+		pList->pHead = pEntry;
+	pList->pTail = pEntry;
+	pList->size++;
+
+	return;
+}
+
+static inline PLIST_ENTRY removeHeadList(
+	IN PLIST_HEADER pList)
+{
+	PLIST_ENTRY pNext;
+	PLIST_ENTRY pEntry;
+
+	pEntry = pList->pHead;
+	if (pList->pHead != NULL)
+	{
+		pNext = pList->pHead->pNext;
+		pList->pHead = pNext;
+		if (pNext == NULL)
+			pList->pTail = NULL;
+		pList->size--;
+	}
+	return pEntry;
+}
+
+static inline int getListSize(
+	IN PLIST_HEADER pList)
+{
+	return pList->size;
+}
+
+static inline PLIST_ENTRY delEntryList(
+	IN PLIST_HEADER pList,
+	IN PLIST_ENTRY pEntry)
+{
+	PLIST_ENTRY pCurEntry;
+	PLIST_ENTRY pPrvEntry;
+
+	if(pList->pHead == NULL)
+		return NULL;
+
+	if(pEntry == pList->pHead)
+	{
+		pCurEntry = pList->pHead;
+		pList->pHead = pCurEntry->pNext;
+
+		if(pList->pHead == NULL)
+			pList->pTail = NULL;
+
+		pList->size--;
+		return pCurEntry;
+	}
+
+	pPrvEntry = pList->pHead;
+	pCurEntry = pPrvEntry->pNext;
+	while(pCurEntry != NULL)
+	{
+		if (pEntry == pCurEntry)
+		{
+			pPrvEntry->pNext = pCurEntry->pNext;
+
+			if(pEntry == pList->pTail)
+				pList->pTail = pPrvEntry;
+
+			pList->size--;
+			break;
+		}
+		pPrvEntry = pCurEntry;
+		pCurEntry = pPrvEntry->pNext;
+	}
+
+	return pCurEntry;
+}
+
+#endif // ___LINK_LIST_H__ //
+
-- 
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