[PATCH v2 1/2] powerpc32/booke: consistently return phys_addr_t in __pa()

[yingjie_bai at 126.com]

From: Bai Yingjie <byj.tea at gmail.com>

When CONFIG_RELOCATABLE=y is set, VIRT_PHYS_OFFSET is a 64bit variable,
thus __pa() returns as 64bit value.
But when CONFIG_RELOCATABLE=n, __pa() returns 32bit value.

We'd make __pa() consistently return phys_addr_t, even if the upper bits
are known to always be zero in a particular config.

Signed-off-by: Bai Yingjie <byj.tea at gmail.com>
---
 arch/powerpc/include/asm/page.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 7f1fd41e3065..86332080399a 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -209,7 +209,7 @@ static inline bool pfn_valid(unsigned long pfn)
  */
 #if defined(CONFIG_PPC32) && defined(CONFIG_BOOKE)
 #define __va(x) ((void *)(unsigned long)((phys_addr_t)(x) + VIRT_PHYS_OFFSET))
-#define __pa(x) ((unsigned long)(x) - VIRT_PHYS_OFFSET)
+#define __pa(x) ((phys_addr_t)(unsigned long)(x) - VIRT_PHYS_OFFSET)
 #else
 #ifdef CONFIG_PPC64
 /*
-- 
2.17.1