# Ping does not go through

**URL:** <https://forum.legato.io/t/ping-does-not-go-through/6975>\
**Category:** Uncategorized\
**Created:** [December 17, 2025, 7:21am UTC](https://forum.legato.io/t/ping-does-not-go-through/6975 "2025-12-17T07:21:35Z")\
**Posts on this page:** 1\
**Showing post:** 17

<div class="post-metadata">

**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\
**Post date:** [March 13, 2026, 3:35pm UTC](https://forum.legato.io/t/ping-does-not-go-through/6975/17 "2026-03-13T15:35:15Z")

</div>

Please see if this one-line modification in drivers/soc/qcom/smsm.c (around line 418) in R17 can bring improvement on this issue:

```auto
static int smsm_inbound_entry(struct qcom_smsm *smsm,
			      struct smsm_entry *entry,
			      struct device_node *node)
{
	int ret;

	smsm->irq = irq_of_parse_and_map(node, 0);
	if (!smsm->irq) {
		dev_err(smsm->dev, "failed to parse smsm interrupt\n");
		return -EINVAL;
	}

	ret = devm_request_threaded_irq(smsm->dev, smsm->irq,
					NULL, smsm_intr,
					IRQF_ONESHOT,
					"smsm", (void *)entry);
	if (ret) {
		dev_err(smsm->dev, "failed to request interrupt\n");
		return ret;
	}

//Add this line for the fix
    enable_irq_wake(smsm->irq);

	entry->domain = irq_domain_add_linear(node, 32, &smsm_irq_ops, entry);
	if (!entry->domain) {
		dev_err(smsm->dev, "failed to add irq_domain\n");
		return -ENOMEM;
	}

	return 0;
}

 

```

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