[PATCH 11/11] clockevents/drivers/timer-stm32: Fix build warning spotted by kbuild test robot

From: Daniel Lezcano
Date: Tue Jun 02 2015 - 08:34:36 EST


From: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>

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@xxxxxxxxx>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
---
drivers/clocksource/timer-stm32.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/timer-stm32.c b/drivers/clocksource/timer-stm32.c
index fad2e2e..a97e8b5 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 {
--
1.9.1

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