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 fad2e2e..a97e8b5 100644 (file)
--- 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 {