m68knommu: Correct page_to_phys when PAGE_OFFSET is non-zero.
authorSteven King <sfking@fdwdc.com>
Thu, 12 Jun 2014 03:01:10 +0000 (20:01 -0700)
committerGreg Ungerer <gerg@uclinux.org>
Fri, 20 Jun 2014 05:11:20 +0000 (15:11 +1000)
The definition of page_to_phys for nommu produces an incorrect value when
PAGE_OFFSET is non-zero.  The nommu version of page_to_pfn works correctly
for non-zero PAGE_OFFSET, so use that instead.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
arch/m68k/include/asm/virtconvert.h

index f35229b..b8a82fb 100644 (file)
@@ -26,16 +26,12 @@ static inline void *phys_to_virt(unsigned long address)
 }
 
 /* Permanent address of a page. */
-#ifdef CONFIG_MMU
-#ifdef CONFIG_SINGLE_MEMORY_CHUNK
+#if defined(CONFIG_MMU) && defined(CONFIG_SINGLE_MEMORY_CHUNK)
 #define page_to_phys(page) \
        __pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) << PAGE_SHIFT))
 #else
 #define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
 #endif
-#else
-#define page_to_phys(page)     (((page) - mem_map) << PAGE_SHIFT)
-#endif
 
 /*
  * IO bus memory addresses are 1:1 with the physical address,