From: Changcheng Deng <deng.changcheng@xxxxxxxxxx> do_div() does a 64-by-32 division. Here the divisor is an unsigned long which on some platforms is 64 bit wide. So use div64_ul instead of do_div to avoid a possible truncation. Reported-by: Zeal Robot <zealci@xxxxxxxxxx> Signed-off-by: Changcheng Deng <deng.changcheng@xxxxxxxxxx> --- drivers/watchdog/davinci_wdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c index e6eaba6bae5b..584a56893b81 100644 --- a/drivers/watchdog/davinci_wdt.c +++ b/drivers/watchdog/davinci_wdt.c @@ -134,7 +134,7 @@ static unsigned int davinci_wdt_get_timeleft(struct watchdog_device *wdd) timer_counter = ioread32(davinci_wdt->base + TIM12); timer_counter |= ((u64)ioread32(davinci_wdt->base + TIM34) << 32); - do_div(timer_counter, freq); + timer_counter = div64_ul(timer_counter, freq); return wdd->timeout - timer_counter; } -- 2.25.1
