net/mlx5: Avoid report two health errors on same syndrome

[ Upstream commit b5d7b2f ]

In case health counter has not increased for few polling intervals, miss
counter will reach max misses threshold and health report will be
triggered for FW health reporter. In case syndrome found on same health
poll another health report will be triggered.

Avoid two health reports on same syndrome by marking this syndrome as
already known.

Signed-off-by: Moshe Shemesh <[email protected]>
Reviewed-by: Shahar Shitrit <[email protected]>
Signed-off-by: Tariq Toukan <[email protected]>
Reviewed-by: Kalesh AP <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: mosheshemesh2

drivers/net/ethernet/mellanox/mlx5/core/health.c

@@ -733,6 +733,7 @@ static void poll_health(struct timer_list *t)
 	health->prev = count;
 	if (health->miss_counter == MAX_MISSES) {
 		mlx5_core_err(dev, "device's health compromised - reached miss count\n");
+		health->synd = ioread8(&h->synd);
 		print_health_info(dev);
 		queue_work(health->wq, &health->report_work);
 	}