Linux 2.6.17.11 - fix compilation error on IA64

The commit 8833ebaa3f4325820fe3338ccf6fae04f6669254 introduced a change that makes the compilation of a IA64 kernel fail as follows:

  GEN     usr/initramfs_data.cpio.gz
  AS      usr/initramfs_data.o
  LD      usr/built-in.o
  CC      arch/ia64/kernel/acpi.o
  AS      arch/ia64/kernel/entry.o

include/asm/mman.h: Assembler messages:
include/asm/mman.h:13: Error: Unknown opcode int ia64_map_check_rgn(unsigned long addr,unsigned long len,' include/asm/mman.h:14: Error: Unknown opcode unsigned long flags)'
make[1]: *** [arch/ia64/kernel/entry.o] Error 1
make: *** [arch/ia64/kernel] Error 2

This patch fixes this.

---

diff -urNp linux-2.6.17.11/include/asm-ia64/mman.h linux-2.6.17.11-fix/include/asm-ia64/mman.h
@@ -8,7 +8,7 @@
  *	David Mosberger-Tang <[email protected]>, Hewlett-Packard Co
  */
 
-#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
 #define arch_mmap_check	ia64_map_check_rgn
 int ia64_map_check_rgn(unsigned long addr, unsigned long len,
 		unsigned long flags);

Hi all!

I am resending this patch because I removed the "#ifdef __KERNEL__" protection in the previous version by mistake.

---

The commit 8833ebaa3f4325820fe3338ccf6fae04f6669254 introduced a change that makes the compilation of a IA64 kernel fail as shown below:

gcc -Wp,-MD,arch/ia64/kernel/.entry.o.d -nostdinc -isystem /usr/lib/gcc/ia64-linux-gnu/4.1.2/include -D__KERNEL__ -Iinclude -include include/linux/autoconf.h -DHAVE_WORKING_TEXT_ALIGN -DHAVE_MODEL_SMALL_ATTRIBUTE -DHAVE_SERIALIZE_DIRECTIVE -D__ASSEMBLY__ -mconstant-gp -c -o arch/ia64/kernel/entry.o arch/ia64/kernel/entry.S
include/asm/mman.h: Assembler messages:
include/asm/mman.h:13: Error: Unknown opcode int ia64_map_check_rgn(unsigned long addr,unsigned long len,' include/asm/mman.h:14: Error: Unknown opcode unsigned long flags)'
make[1]: *** [arch/ia64/kernel/entry.o] Error 1
make: *** [arch/ia64/kernel] Error 2

The reason is that "asm/mman.h" is being included from entry.S indirectly through "asm/pgtable.h" (see code snips below).

* arch/ia64/kernel/entry.S:
...
#include <asm/pgtable.h>
...

* include/asm-ia64/pgtable.h:
...
#include <asm/mman.h>
...

* include/asm-ia64/mman.h
...
#ifdef __KERNEL__
#define arch_mmap_check ia64_map_check_rgn
int ia64_map_check_rgn(unsigned long addr, unsigned long len,

                unsigned long flags);

#endif
...

---

diff -urNp linux-2.6.17.11/include/asm-ia64/mman.h linux-2.6.17.11-fix/include/asm-ia64/mman.h
@@ -9,10 +9,12 @@
  */
 
 #ifdef __KERNEL__
+#ifndef __ASSEMBLY__
 #define arch_mmap_check	ia64_map_check_rgn
 int ia64_map_check_rgn(unsigned long addr, unsigned long len,
 		unsigned long flags);
 #endif
+#endif
 
 #include <asm-generic/mman.h>