[PATCH] mips: add ptr_to_compat()

Add ptr_to_compat() - needed by the new robust futex code.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/asm-mips/compat.h b/include/asm-mips/compat.h
index 0012bd804d2d..986511db54a6 100644
--- a/include/asm-mips/compat.h
+++ b/include/asm-mips/compat.h
@@ -133,6 +133,11 @@ static inline void __user *compat_ptr(compat_uptr_t uptr)
         return (void __user *)(long)uptr;
 }
 
+static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+{
+        return (u32)(unsigned long)uptr;
+}
+
 static inline void __user *compat_alloc_user_space(long len)
 {
         struct pt_regs *regs = (struct pt_regs *)