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Commit c8ca6e70 authored by Marek Behún's avatar Marek Behún Committed by Wim Van Sebroeck
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watchdog: armada_37xx_wdt: use do_div for u64 division 



When the driver is built on 32 bit architectures during compile test,
the linker complains about "__udivdi3" being undefined. We have to use
do_div macro instead of the division operator when dividing u64 value.

Signed-off-by: default avatarMarek Behún <marek.behun@nic.cz>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent cd69606a

drivers/watchdog/armada_37xx_wdt.c

+5 −4
Original line number Diff line number Diff line
@@ -156,10 +156,10 @@ static int armada_37xx_wdt_ping(struct watchdog_device *wdt) 
static unsigned int armada_37xx_wdt_get_timeleft(struct watchdog_device *wdt)

{

	struct armada_37xx_watchdog *dev = watchdog_get_drvdata(wdt);

	unsigned int res;

	u64 res;



	res = get_counter_value(dev, CNTR_ID_WDOG) *

	      CNTR_CTRL_PRESCALE_MIN / dev->clk_rate;

	res = get_counter_value(dev, CNTR_ID_WDOG) * CNTR_CTRL_PRESCALE_MIN;

	do_div(res, dev->clk_rate);



	return res;

}
@@ -176,7 +176,8 @@ static int armada_37xx_wdt_set_timeout(struct watchdog_device *wdt, 
	 * prescaler, which divides the clock rate by 2

	 * (CNTR_CTRL_PRESCALE_MIN).

	 */

	dev->timeout = (u64)dev->clk_rate * timeout / CNTR_CTRL_PRESCALE_MIN;

	dev->timeout = (u64)dev->clk_rate * timeout;

	do_div(dev->timeout, CNTR_CTRL_PRESCALE_MIN);



	return 0;

}