generic: redefine resource_size_t as phys_addr_t

There's no good reason why a resource_size_t shouldn't just be a
physical address, so simply redefine it in terms of phys_addr_t.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 6 insertions, 11 deletions

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 7f6512733862..be852fd407a8 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -135,7 +135,6 @@ config PTE_64BIT
 config PHYS_64BIT
         bool 'Large physical address support' if E500
         depends on 44x || E500
-        select RESOURCES_64BIT
         default y if 44x
         ---help---
           This option enables kernel support for larger than 32-bit physical
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index fb368dfde5d4..e8a76d9539db 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -41,13 +41,10 @@ extern unsigned long total_memory;
 #define U64_TO_U32_LOW(val)     ((u32)((val) & 0x00000000ffffffffULL))
 #define U64_TO_U32_HIGH(val)    ((u32)((val) >> 32))
 
-#ifdef CONFIG_RESOURCES_64BIT
-#define RES_TO_U32_LOW(val)     U64_TO_U32_LOW(val)
-#define RES_TO_U32_HIGH(val)    U64_TO_U32_HIGH(val)
-#else
-#define RES_TO_U32_LOW(val)     (val)
-#define RES_TO_U32_HIGH(val)    (0)
-#endif
+#define RES_TO_U32_LOW(val)     \
+        ((sizeof(resource_size_t) > sizeof(u32)) ? U64_TO_U32_LOW(val) : (val))
+#define RES_TO_U32_HIGH(val)    \
+        ((sizeof(resource_size_t) > sizeof(u32)) ? U64_TO_U32_HIGH(val) : (0))
 
 static inline int ppc440spe_revA(void)
 {
@@ -145,12 +142,11 @@ static int __init ppc4xx_parse_dma_ranges(struct pci_controller *hose,
 
                 /* Use that */
                 res->start = pci_addr;
-#ifndef CONFIG_RESOURCES_64BIT
                 /* Beware of 32 bits resources */
-                if ((pci_addr + size) > 0x100000000ull)
+                if (sizeof(resource_size_t) == sizeof(u32) &&
+                    (pci_addr + size) > 0x100000000ull)
                         res->end = 0xffffffff;
                 else
-#endif
                         res->end = res->start + size - 1;
                 break;
         }