From: Tim Deegan <Tim.Deegan@citrix.com>
Date: Mon, 7 Mar 2011 11:21:11 +0000 (+0000)
Subject: x86: make spinlock's 16-bit asm operand explicitly 16-bit.
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=26315747810e1a520daeb5fc0042ab083dead693;p=xen.git

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@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
---

diff --git a/xen/include/asm-x86/spinlock.h b/xen/include/asm-x86/spinlock.h
index 35ed9759e7..b7cd945584 100644
--- a/xen/include/asm-x86/spinlock.h
+++ b/xen/include/asm-x86/spinlock.h
@@ -27,7 +27,7 @@ static always_inline int _raw_spin_trylock(raw_spinlock_t *lock)
     asm volatile (
         "xchgw %w0,%1"
         :"=r" (oldval), "=m" (lock->lock)
-        :"0" (0) : "memory" );
+        :"0" ((s16)0) : "memory" );
     return (oldval > 0);
 }