powerpc/32: use memset() instead of memset_io() to zero BSS

Since commit 400c47d81ca38 ("powerpc32: memset: only use dcbz once cache is
enabled"), memset() can be used before activation of the cache,
so no need to use memset_io() for zeroing the BSS.

Acked-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/early_32.c b/arch/powerpc/kernel/early_32.c
index cf3cdd81dc4758fb954fce7460749ad0ec51fa0c..3482118ffe763a0dc09b82ff64b5db92a787846b 100644 (file)
--- a/arch/powerpc/kernel/early_32.c
+++ b/arch/powerpc/kernel/early_32.c
@@ -21,8 +21,8 @@ notrace unsigned long __init early_init(unsigned long dt_ptr)
 {
        unsigned long offset = reloc_offset();
 
-       /* First zero the BSS -- use memset_io, some platforms don't have caches on yet */
-       memset_io((void __iomem *)PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);
+       /* First zero the BSS */
+       memset(PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);
 
        /*
         * Identify the CPU type and fix up code sections