diff --git a/drivers/staging/csr/oska/time.h b/drivers/staging/csr/oska/time.h
deleted file mode 100644
index d246ce937309..000000000000
--- a/drivers/staging/csr/oska/time.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * OSKA Linux implementation -- timing
- *
- * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
- *
- * Refer to LICENSE.txt included with this source code for details on
- * the license terms.
- */
-#ifndef __OSKA_LINUX_TIME_H
-#define __OSKA_LINUX_TIME_H
-
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-#include <linux/jiffies.h>
-
-static inline unsigned long os_current_time_ms(void)
-{
-    return jiffies_to_msecs(jiffies);
-}
-
-static inline void os_sleep_ms(unsigned ms)
-{
-    msleep_interruptible(ms);
-}
-
-static inline void os_delay_us(unsigned us)
-{
-    udelay(us);
-}
-
-#define os_time_after(a, b) time_after((a), (b))
-
-#endif /* __OSKA_LINUX_TIME_H */