/**
- * ixgbe_ptp_overflow_check - delayed work to detect SYSTIME overflow
- * @work: structure containing information about this work task
+ * ixgbe_ptp_overflow_check - watchdog task to detect SYSTIME overflow
+ * @adapter: private adapter struct
*
- * this work function is scheduled to continue reading the timecounter
+ * this watchdog task periodically reads the timecounter
* in order to prevent missing when the system time registers wrap
- * around. This needs to be run approximately twice a minute when no
- * PTP activity is occurring.
+ * around. This needs to be run approximately twice a minute.
*/
void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter)
{
- unsigned long elapsed_jiffies = adapter->last_overflow_check - jiffies;
+ bool timeout = time_is_before_jiffies(adapter->last_overflow_check +
+ IXGBE_OVERFLOW_PERIOD);
struct timespec ts;
if ((adapter->flags2 & IXGBE_FLAG2_PTP_ENABLED) &&
- (elapsed_jiffies >= IXGBE_OVERFLOW_PERIOD)) {
+ (timeout)) {
ixgbe_ptp_gettime(&adapter->ptp_caps, &ts);
adapter->last_overflow_check = jiffies;
}