[PATCH] powerpc: fix various sparse warnings

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index dc2770d..676f894 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -111,7 +111,7 @@
 
 	/* First zero the BSS -- use memset_io, some platforms don't have
 	 * caches on yet */
-	memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
+	memset_io((void __iomem *)PTRRELOC(&__bss_start), 0, _end - __bss_start);
 
 	/*
 	 * Identify the CPU type and fix up code sections