diff options
| author | Marek Behún <marek.behun@nic.cz> | 2018-10-10 18:17:27 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2018-10-13 16:19:43 +0300 |
| commit | c8ca6e70fb74cd3bb6fc0738aed40991b9de0b87 (patch) | |
| tree | 77023db2b5400ca07861c328b56c909bcdb0403a /drivers/watchdog | |
| parent | cd69606ad05e1d6a930e2d29ac277c00108ef908 (diff) | |
| download | linux-c8ca6e70fb74cd3bb6fc0738aed40991b9de0b87.tar.xz | |
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 Behún <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.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/watchdog/armada_37xx_wdt.c b/drivers/watchdog/armada_37xx_wdt.c index c43c313ba63d..4b4054f54df9 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; } |