From 717ebfb1522b1206ecf557b2b1ce63810f44151e Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Tue, 3 Oct 2006 14:13:09 +0900
Subject: [PATCH] --- yaml --- r: 38201 b: refs/heads/master c:
 fac99d97469e7f91102f97101bea620e5f073196 h: refs/heads/master i:   38199:
 e6ec130e57f732a116f0c85ce2f2e81b0f74ac56 v: v3

---
 [refs]                          | 2 +-
 trunk/include/asm-sh/spinlock.h | 9 ++++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 31c705e39b8a..6e63379aff6d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2914d4da172f53f71d0563d3c3bae14e496cbc86
+refs/heads/master: fac99d97469e7f91102f97101bea620e5f073196
diff --git a/trunk/include/asm-sh/spinlock.h b/trunk/include/asm-sh/spinlock.h
index 54458fd24981..2586eef07d57 100644
--- a/trunk/include/asm-sh/spinlock.h
+++ b/trunk/include/asm-sh/spinlock.h
@@ -88,7 +88,14 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw)
 	__raw_spin_unlock(&rw->lock);
 }
 
-#define __raw_read_trylock(lock) generic__raw_read_trylock(lock)
+static inline int __raw_read_trylock(raw_rwlock_t *lock)
+{
+	atomic_t *count = (atomic_t*)lock;
+	if (atomic_dec_return(count) >= 0)
+		return 1;
+	atomic_inc(count);
+	return 0;
+}
 
 static inline int __raw_write_trylock(raw_rwlock_t *rw)
 {