x86: sparse warnings in pageattr.c

Adjust the definition of lookup_address to take an unsigned long
level argument.  Adjust callers in xen/mmu.c that pass in a
dummy variable.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 45aa771..0144395 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -58,7 +58,7 @@
 
 xmaddr_t arbitrary_virt_to_machine(unsigned long address)
 {
-	int level;
+	unsigned int level;
 	pte_t *pte = lookup_address(address, &level);
 	unsigned offset = address & PAGE_MASK;
 
@@ -71,7 +71,7 @@
 {
 	pte_t *pte, ptev;
 	unsigned long address = (unsigned long)vaddr;
-	int level;
+	unsigned int level;
 
 	pte = lookup_address(address, &level);
 	BUG_ON(pte == NULL);
@@ -86,7 +86,7 @@
 {
 	pte_t *pte, ptev;
 	unsigned long address = (unsigned long)vaddr;
-	int level;
+	unsigned int level;
 
 	pte = lookup_address(address, &level);
 	BUG_ON(pte == NULL);