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drivers: NXP ENET: fix for issue mutex called from ISR #89443

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drivers: NXP ENET: fix for issue mutex called from ISR #89443

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9 changes: 5 additions & 4 deletions drivers/ethernet/eth_nxp_enet.c
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Original file line number Diff line number Diff line change
Expand Up @@ -164,15 +164,16 @@ static inline void ts_register_tx_event(const struct device *dev,

if (pkt && atomic_get(&pkt->atomic_ref) > 0) {
if (eth_get_ptp_data(net_pkt_iface(pkt), pkt) && frameinfo->isTsAvail) {
k_mutex_lock(data->ptp.ptp_mutex, K_FOREVER);

/* Timestamp is written to packet in ISR.
* Semaphore ensures sequential execution of writing
* the timestamp here and subsequently reading the timestamp
* after waiting for the semaphore in eth_wait_for_ptp_ts().
*/
pkt->timestamp.nanosecond = frameinfo->timeStamp.nanosecond;
pkt->timestamp.second = frameinfo->timeStamp.second;

net_if_add_tx_timestamp(pkt);
k_sem_give(&data->ptp.ptp_ts_sem);

k_mutex_unlock(data->ptp.ptp_mutex);
}
net_pkt_unref(pkt);
}
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