dev_t boot_dev is declared in arch/powerpc/kernel/setup_32.c
and in arch/powerpc/kernel/setup_64.c but not used in these files.
It is only used in arch/powerpc/platforms/powermac/setup.c, so make
it static in this file

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Index: arch/powerpc/kernel/setup_32.c
===================================================================
--- a/arch/powerpc/kernel/setup_32.c.orig
+++ b/arch/powerpc/kernel/setup_32.c
@@ -63,10 +63,6 @@ unsigned int DMA_MODE_WRITE;
 
 int have_of = 1;
 
-#ifdef CONFIG_PPC_MULTIPLATFORM
-dev_t boot_dev;
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
 #ifdef CONFIG_VGA_CONSOLE
 unsigned long vgacon_remap_base;
 #endif
Index: arch/powerpc/kernel/setup_64.c
===================================================================
--- a/arch/powerpc/kernel/setup_64.c.orig
+++ b/arch/powerpc/kernel/setup_64.c
@@ -71,7 +71,6 @@
 
 int have_of = 1;
 int boot_cpuid = 0;
-dev_t boot_dev;
 u64 ppc64_pft_size;
 
 /* Pick defaults since we might want to patch instructions
Index: arch/powerpc/platforms/powermac/setup.c
===================================================================
--- a/arch/powerpc/platforms/powermac/setup.c.orig
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -361,7 +361,7 @@ char *bootdevice;
 void *boot_host;
 int boot_target;
 int boot_part;
-extern dev_t boot_dev;
+static dev_t boot_dev;
 
 #ifdef CONFIG_SCSI
 void __init note_scsi_host(struct device_node *node, void *host)

--
 Dipl.-Ing. Sascha Hauer | http://www.pengutronix.de
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