From: 黄涛 <huangtao@rock-chips.com>
Date: Wed, 23 Mar 2011 07:13:08 +0000 (+0800)
Subject: rk29: timer: try to fix stop on "Calibrating delay loop" bug
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=20489a5096778f6b6f9399e05f0ce342a8bddfeb;p=firefly-linux-kernel-4.4.55.git

rk29: timer: try to fix stop on "Calibrating delay loop" bug
---

diff --git a/arch/arm/mach-rk29/timer.c b/arch/arm/mach-rk29/timer.c
index 89f24857346b..c390129d268f 100644
--- a/arch/arm/mach-rk29/timer.c
+++ b/arch/arm/mach-rk29/timer.c
@@ -95,9 +95,12 @@ static void rk29_timer_set_mode(enum clock_event_mode mode, struct clock_event_d
 {
 	switch (mode) {
 	case CLOCK_EVT_MODE_PERIODIC:
-		RK_TIMER_DISABLE(TIMER_CLKEVT);
-		RK_TIMER_SETCOUNT(TIMER_CLKEVT, 24000000/HZ - 1);
-		RK_TIMER_ENABLE(TIMER_CLKEVT);
+		do {
+			RK_TIMER_DISABLE(TIMER_CLKEVT);
+			RK_TIMER_SETCOUNT(TIMER_CLKEVT, 24000000/HZ - 1);
+			RK_TIMER_ENABLE(TIMER_CLKEVT);
+		} while (RK_TIMER_READVALUE(TIMER_CLKEVT) > (24000000/HZ - 1));
+		break;
 	case CLOCK_EVT_MODE_RESUME:
 	case CLOCK_EVT_MODE_ONESHOT:
 		break;