diff options
Diffstat (limited to 'drivers/watchdog/s3c2410_wdt.c')
| -rw-r--r-- | drivers/watchdog/s3c2410_wdt.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index c1ada330e125..8beaa1799df6 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -188,7 +188,7 @@ static int s3c2410wdt_set_heartbeat(struct watchdog_device *wdd, unsigned timeou if (timeout < 1) return -EINVAL; - freq /= 128; + freq = DIV_ROUND_UP(freq, 128); count = timeout * freq; DBG("%s: count=%d, timeout=%d, freq=%lu\n", @@ -200,21 +200,18 @@ static int s3c2410wdt_set_heartbeat(struct watchdog_device *wdd, unsigned timeou */ if (count >= 0x10000) { - for (divisor = 1; divisor <= 0x100; divisor++) { - if ((count / divisor) < 0x10000) - break; - } + divisor = DIV_ROUND_UP(count, 0xffff); - if ((count / divisor) >= 0x10000) { + if (divisor > 0x100) { dev_err(wdt->dev, "timeout %d too big\n", timeout); return -EINVAL; } } DBG("%s: timeout=%d, divisor=%d, count=%d (%08x)\n", - __func__, timeout, divisor, count, count/divisor); + __func__, timeout, divisor, count, DIV_ROUND_UP(count, divisor)); - count /= divisor; + count = DIV_ROUND_UP(count, divisor); wdt->count = count; /* update the pre-scaler */ |