Commit f2f33387 authored by Jacob Keller's avatar Jacob Keller Committed by Jeff Kirsher
Browse files

ixgbe: Update ptp_overflow check comment and jiffies

This patch fixes the comment on ptp_overflow_check to match up with what is
currently used as the parameters. Also change the jiffies check to use
time_is_after_jiffies macro.
Signed-off-by: default avatarJacob Keller <>
Tested-by: default avatarPhil Schmitt <>
Signed-off-by: default avatarJeff Kirsher <>
parent aeb82648
......@@ -407,21 +407,21 @@ void ixgbe_ptp_check_pps_event(struct ixgbe_adapter *adapter, u32 eicr)
* 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 +
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;
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