[IOAT]: drivers/dma/iovlock.c: make num_pages_spanned() static

This patch makes the needlessly global num_pages_spanned() static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/dma/iovlock.c b/drivers/dma/iovlock.c
index 5ed327e..d637555 100644
--- a/drivers/dma/iovlock.c
+++ b/drivers/dma/iovlock.c
@@ -31,7 +31,7 @@
 #include <asm/io.h>
 #include <asm/uaccess.h>
 
-int num_pages_spanned(struct iovec *iov)
+static int num_pages_spanned(struct iovec *iov)
 {
 	return
 	((PAGE_ALIGN((unsigned long)iov->iov_base + iov->iov_len) -