rk29: cru.h: make LOOP more accurate

diff --git a/arch/arm/mach-rk29/include/mach/cru.h b/arch/arm/mach-rk29/include/mach/cru.h
index 45281a9fd65fcd8330ea681d4bfd353fa6193114..5e38f3ea6735d6646b1d8542f7b528e86a568715 100644 (file)
--- a/arch/arm/mach-rk29/include/mach/cru.h
+++ b/arch/arm/mach-rk29/include/mach/cru.h
@@ -305,6 +305,6 @@ void cru_set_soft_reset(enum cru_soft_reset idx, bool on);
 
 #define LOOPS_PER_USEC 13
 #define LOOPS_PER_MSEC 12000
-#define LOOP(loops) do { int i = loops; barrier(); while (i--) barrier(); } while (0)
+#define LOOP(loops) do { unsigned int i = loops; barrier(); while (--i) barrier(); } while (0)
 
 #endif