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Network: Improve half-second conversion

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This commit is contained in:
Gregory Nutt 2016-02-03 13:08:19 -06:00
parent cea3854dea
commit 41164740a5
1 changed files with 5 additions and 4 deletions
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9
net/devif/devif_poll.c
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@ -430,7 +430,6 @@ int devif_poll(FAR struct net_driver_s *dev, devif_poll_callback_t callback)
int devif_timer(FAR struct net_driver_s *dev, devif_poll_callback_t callback)
{
systime_t now;
systime_t elpased;
int bstop = false;
int hsec;
@ -441,13 +440,15 @@ int devif_timer(FAR struct net_driver_s *dev, devif_poll_callback_t callback)
now = clock_systimer();
hsec = (now - g_polltime) / TICK_PER_HSEC;
/* Update the time only when more than one half second elapses */
/* Process time-related events only when more than one half second elapses. */
if (hsec > 0)
{
/* Save the current time */
/* Update the current poll time (truncating to the last half second
* boundary to avoid error build-up).
*/
g_polltime = now;
g_polltime += (TICK_PER_HSEC * (systime_t)hsec);
/* Perform periodic activitives that depend on hsec > 0 */