[POWERPC] Fix 32 bits warning in prom_init.c

A warning is hurting my eyes when building 32 bits kernels

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index b6c3ac20c14c..462bced40c12 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -557,7 +557,9 @@ unsigned long prom_memparse(const char *ptr, const char **retptr)
 static void __init early_cmdline_parse(void)
 {
         struct prom_t *_prom = &RELOC(prom);
+#ifdef CONFIG_PPC64
         const char *opt;
+#endif
         char *p;
         int l = 0;