patch-2.3.16 linux/include/asm-arm/atomic.h

• Lines: 20
• Date: Mon Aug 30 18:15:21 1999
• Orig file: v2.3.15/linux/include/asm-arm/atomic.h
• Orig date: Mon Jul 19 13:12:47 1999

diff -u --recursive --new-file v2.3.15/linux/include/asm-arm/atomic.h linux/include/asm-arm/atomic.h
@@ -81,6 +81,19 @@
 	return result;
 }
 
+extern __inline__ int atomic_add_negative(int i, volatile atomic_t *v)
+{
+	unsigned long flags;
+	int result;
+
+	save_flags_cli(flags);
+	v->counter += i;
+	result = (v->counter < 0);
+	restore_flags(flags);
+
+	return result;
+}
+
 static __inline__ void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 {
 	unsigned long flags;