linux-kernel - Re: [EXTERNAL] [PATCH 2/3] net: ti: icss-iep: Enable compare events

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Message-ID: <c4fb16a9-7b5f-4ba2-98ea-ac554fbe313f@lunn.ch>
Date: Sun, 2 Jun 2024 17:19:36 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Sunil Kovvuri Goutham <sgoutham@...vell.com>
Cc: Diogo Ivo <diogo.ivo@...mens.com>, MD Danish Anwar <danishanwar@...com>,
	Roger Quadros <rogerq@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Richard Cochran <richardcochran@...il.com>,
	Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
	Tero Kristo <kristo@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [EXTERNAL] [PATCH 2/3] net: ti: icss-iep: Enable compare events

> >+	iep->cap_cmp_irq = platform_get_irq_byname_optional(pdev,
> >"iep_cap_cmp");
> >+	if (iep->cap_cmp_irq < 0) {
> >+		if (iep->cap_cmp_irq == -EPROBE_DEFER)
> >+			return iep->cap_cmp_irq;
> 
> This info is coming from DT, is PROBE_DIFFER error return value possible ?

static int __platform_get_irq_byname(struct platform_device *dev,
				     const char *name)
{
	struct resource *r;
	int ret;

	ret = fwnode_irq_get_byname(dev_fwnode(&dev->dev), name);
	if (ret > 0 || ret == -EPROBE_DEFER)
		return ret;

This suggests it can happen.

	Andrew