[Xen-changelog] [xen-unstable] x86: make spinlock's 16-bit asm operand explicitly 16-bit.

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxx>
# Date 1299496871 0
# Node ID 5f68924489f569539fc60e46f866bd75ecc82134
# Parent  bbc03993d31f5b9c56c44b068cdd00f08971c21c
x86: make spinlock's 16-bit asm operand explicitly 16-bit.
This is needed to compile xen with clang.

Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Acked-by: Keir Fraser <keir@xxxxxxx>
---


diff -r bbc03993d31f -r 5f68924489f5 xen/include/asm-x86/spinlock.h
--- a/xen/include/asm-x86/spinlock.h    Sat Mar 05 16:02:33 2011 +0000
+++ b/xen/include/asm-x86/spinlock.h    Mon Mar 07 11:21:11 2011 +0000
@@ -27,7 +27,7 @@
     asm volatile (
         "xchgw %w0,%1"
         :"=r" (oldval), "=m" (lock->lock)
-        :"0" (0) : "memory" );
+        :"0" ((s16)0) : "memory" );
     return (oldval > 0);
 }
 

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