aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/watchdog
diff options
context:
space:
mode:
authorMarek BehĂșn <marek.behun@nic.cz>2018-10-10 15:17:27 (GMT)
committerWim Van Sebroeck <wim@linux-watchdog.org>2018-10-13 13:19:43 (GMT)
commitc8ca6e70fb74cd3bb6fc0738aed40991b9de0b87 (patch)
tree77023db2b5400ca07861c328b56c909bcdb0403a /drivers/watchdog
parentcd69606ad05e1d6a930e2d29ac277c00108ef908 (diff)
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: Marek BehĂșn <marek.behun@nic.cz> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/armada_37xx_wdt.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/watchdog/armada_37xx_wdt.c b/drivers/watchdog/armada_37xx_wdt.c
index c43c313..4b4054f 100644
--- a/drivers/watchdog/armada_37xx_wdt.c
+++ b/drivers/watchdog/armada_37xx_wdt.c
@@ -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;
}

Privacy Policy