From: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Date: Thu, 28 May 2015 05:05:53 +0000 (+0200)
Subject: clockevents/drivers/timer-stm32: Fix build warning spotted by kbuild test robot
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=d4688bdc6335e9faaf3f0173f96932cd520cee1a;p=openwrt%2Fstaging%2Fblogic.git

clockevents/drivers/timer-stm32: Fix build warning spotted by kbuild test robot

This patch fixes below warning spotted by kbuild test robot when building
with ARCH=powerpc:

   drivers/clocksource/timer-stm32.c: In function 'stm32_clockevent_init':
>> drivers/clocksource/timer-stm32.c:140:9: warning: large integer implicitly
	truncated to unsigned type [-Woverflow]

     writel_relaxed(~0UL, data->base + TIM_ARR);

The fix consists in using 0U instead of 0UL.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---

diff --git a/drivers/clocksource/timer-stm32.c b/drivers/clocksource/timer-stm32.c
index fad2e2e7a0b8..a97e8b50701c 100644
--- a/drivers/clocksource/timer-stm32.c
+++ b/drivers/clocksource/timer-stm32.c
@@ -137,9 +137,9 @@ static void __init stm32_clockevent_init(struct device_node *np)
 	}
 
 	/* Detect whether the timer is 16 or 32 bits */
-	writel_relaxed(~0UL, data->base + TIM_ARR);
+	writel_relaxed(~0U, data->base + TIM_ARR);
 	max_delta = readl_relaxed(data->base + TIM_ARR);
-	if (max_delta == ~0UL) {
+	if (max_delta == ~0U) {
 		prescaler = 1;
 		bits = 32;
 	} else {