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Commit f2f33387 authored by Jacob Keller's avatar Jacob Keller Committed by Jeff Kirsher
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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 <jacob.e.keller@intel.com>
Tested-by: default avatarPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent aeb82648

drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c

+7 −7
Original line number Diff line number Diff line
@@ -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 +

					     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;

	}