---

yaml --- r: 100321 b: refs/heads/master c: 0b28067 h: refs/heads/master i: 100319: ecf9cbe v: v3
git-mirror · Jun 20, 2008 · ebf14c9 · ebf14c9
1 parent 187ff08
commit ebf14c9
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6606470dd1d628878383c96d10b52a77986ddac7
+refs/heads/master: 0b2806768899dba5967bcd4a3b93eaed9a1dc4f3
diff --git a/trunk/include/linux/smp_lock.h b/trunk/include/linux/smp_lock.h
@@ -27,11 +27,24 @@ static inline int reacquire_kernel_lock(struct task_struct *task)
 extern void __lockfunc lock_kernel(void)	__acquires(kernel_lock);
 extern void __lockfunc unlock_kernel(void)	__releases(kernel_lock);
 
+/*
+ * Various legacy drivers don't really need the BKL in a specific
+ * function, but they *do* need to know that the BKL became available.
+ * This function just avoids wrapping a bunch of lock/unlock pairs
+ * around code which doesn't really need it.
+ */
+static inline void cycle_kernel_lock(void)
+{
+	lock_kernel();
+	unlock_kernel();
+}
+
 #else
 
 #define lock_kernel()				do { } while(0)
 #define unlock_kernel()				do { } while(0)
 #define release_kernel_lock(task)		do { } while(0)
+#define cycle_kernel_lock()			do { } while(0)
 #define reacquire_kernel_lock(task)		0
 #define kernel_locked()				1