m68knommu: remove is_in_rom() function

Remove is_in_rom() function.  It doesn't actually serve the purpose it was
intended to.  If you look at the use of it _access_ok() (which is the only use
of it) then it is obvious that most of memory is marked as access_ok.  No
point having is_in_rom() then, so remove it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 7 insertions, 5 deletions

diff --git a/include/asm-m68knommu/pgtable.h b/include/asm-m68knommu/pgtable.h
index 9dfbbc24aa71..e1e6a1d2333a 100644
--- a/include/asm-m68knommu/pgtable.h
+++ b/include/asm-m68knommu/pgtable.h
@@ -49,7 +49,6 @@ static inline int pte_file(pte_t pte) { return 0; }
  * These would be in other places but having them here reduces the diffs.
  */
 extern unsigned int kobjsize(const void *objp);
-extern int is_in_rom(unsigned long);
 
 /*
  * No page table caches to initialise.
diff --git a/include/asm-m68knommu/uaccess.h b/include/asm-m68knommu/uaccess.h
index 62b29b10bc6d..9ed9169a8849 100644
--- a/include/asm-m68knommu/uaccess.h
+++ b/include/asm-m68knommu/uaccess.h
@@ -15,12 +15,15 @@
 
 #define access_ok(type,addr,size)       _access_ok((unsigned long)(addr),(size))
 
+/*
+ * It is not enough to just have access_ok check for a real RAM address.
+ * This would disallow the case of code/ro-data running XIP in flash/rom.
+ * Ideally we would check the possible flash ranges too, but that is
+ * currently not so easy.
+ */
 static inline int _access_ok(unsigned long addr, unsigned long size)
 {
-        extern unsigned long memory_start, memory_end;
-
-        return (((addr >= memory_start) && (addr+size < memory_end)) ||
-                (is_in_rom(addr) && is_in_rom(addr+size)));
+        return 1;
 }
 
 /*