1 files changed, 65 insertions, 0 deletions

diff --git a/drivers/gpu/pvr/pvr_uaccess.h b/drivers/gpu/pvr/pvr_uaccess.h
new file mode 100644
index 00000000000..04fdcc2211a
--- /dev/null
+++ b/drivers/gpu/pvr/pvr_uaccess.h
@@ -0,0 +1,65 @@
+/**********************************************************************
+ *
+ * Copyright(c) 2008 Imagination Technologies Ltd. All rights reserved.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope it will be useful but, except 
+ * as otherwise stated in writing, 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.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * Imagination Technologies Ltd. <gpl-support@imgtec.com>
+ * Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK 
+ *
+ ******************************************************************************/
+
+#ifndef __PVR_UACCESS_H__
+#define __PVR_UACCESS_H__
+
+#ifndef AUTOCONF_INCLUDED
+ #include <linux/config.h>
+#endif
+
+#include <linux/version.h>
+#include <asm/uaccess.h>
+
+static inline unsigned long pvr_copy_to_user(void __user *pvTo, const void *pvFrom, unsigned long ulBytes)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
+    if (access_ok(VERIFY_WRITE, pvTo, ulBytes))
+    {
+        return __copy_to_user(pvTo, pvFrom, ulBytes);
+    }
+    return ulBytes;
+#else
+    return copy_to_user(pvTo, pvFrom, ulBytes);
+#endif
+}
+
+static inline unsigned long pvr_copy_from_user(void *pvTo, const void __user *pvFrom, unsigned long ulBytes)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
+    
+    if (access_ok(VERIFY_READ, pvFrom, ulBytes))
+    {
+        return __copy_from_user(pvTo, pvFrom, ulBytes);
+    }
+    return ulBytes;
+#else
+    return copy_from_user(pvTo, pvFrom, ulBytes);
+#endif
+}
+
+#endif 
+