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Subject[PATCH] m68knommu: change definitions of __pa() and __va()
m68knommu: change definitions of __pa() and __va()

Fix compilation breakage of all m68knommu targets:

CC arch/m68knommu/kernel/asm-offsets.s
In file included from include/linux/sched.h:77,
from arch/m68knommu/kernel/asm-offsets.c:12:
include/linux/percpu.h: In function 'per_cpu_ptr_to_phys':
include/linux/percpu.h:161: error: implicit declaration of function 'virt_to_phy

This is broken in linux-2.6.33-rc3.

Change the definitions of __pa() and __va() to not use virt_to_phys()
and phys_to_virt(). Trivial 1:1 conversion required for the non-MMU case.

A side effect if this is that the m68knommu can now use asm/virtconvert.h
for the definition of virt_to_phys() and phys_to_virt().

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
---
arch/m68k/include/asm/io_no.h | 14 +-------------
arch/m68k/include/asm/page_no.h | 4 ++--
arch/m68k/include/asm/virtconvert.h | 5 +++++
3 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/arch/m68k/include/asm/io_no.h b/arch/m68k/include/asm/io_no.h
index 7f57436..359065d 100644
--- a/arch/m68k/include/asm/io_no.h
+++ b/arch/m68k/include/asm/io_no.h
@@ -3,6 +3,7 @@

#ifdef __KERNEL__

+#include <asm/virtconvert.h>

/*
* These are for ISA/PCI shared memory _only_ and should never be used
@@ -165,19 +166,6 @@ static inline void *ioremap_fullcache(unsigned long physaddr, unsigned long size

extern void iounmap(void *addr);

-/* Pages to physical address... */
-#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
-#define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT)
-
-/*
- * Macros used for converting between virtual and physical mappings.
- */
-#define phys_to_virt(vaddr) ((void *) (vaddr))
-#define virt_to_phys(vaddr) ((unsigned long) (vaddr))
-
-#define virt_to_bus virt_to_phys
-#define bus_to_virt phys_to_virt
-
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access
diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h
index 1f31b06..8029a33 100644
--- a/arch/m68k/include/asm/page_no.h
+++ b/arch/m68k/include/asm/page_no.h
@@ -56,8 +56,8 @@ extern unsigned long memory_end;

#ifndef __ASSEMBLY__

-#define __pa(vaddr) virt_to_phys((void *)(vaddr))
-#define __va(paddr) phys_to_virt((unsigned long)(paddr))
+#define __pa(vaddr) ((unsigned long)(vaddr))
+#define __va(paddr) ((void *)(paddr))

#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
diff --git a/arch/m68k/include/asm/virtconvert.h b/arch/m68k/include/asm/virtconvert.h
index 22ab05c..8700d04 100644
--- a/arch/m68k/include/asm/virtconvert.h
+++ b/arch/m68k/include/asm/virtconvert.h
@@ -26,6 +26,7 @@ static inline void *phys_to_virt(unsigned long address)
}

/* Permanent address of a page. */
+#ifdef CONFIG_MMU
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
#define page_to_phys(page) \
__pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) << PAGE_SHIFT))
@@ -37,6 +38,10 @@ static inline void *phys_to_virt(unsigned long address)
page_to_pfn(__page) << PAGE_SHIFT; \
})
#endif
+#else
+#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
+#define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT)
+#endif

/*
* IO bus memory addresses are 1:1 with the physical address,

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