Commit b2ddc48a authored Sep 13, 2018 by Florian Fainelli Committed by David S. Miller Sep 13, 2018

net: dsa: b53: Do not fail when IRQ are not initialized

When the Device Tree is not providing the per-port interrupts, do not fail
during b53_srab_irq_enable() but instead bail out gracefully. The SRAB driver
is used on the BCM5301X (Northstar) platforms which do not yet have the SRAB
interrupts wired up.

Fixes: 16994374 ("net: dsa: b53: Make SRAB driver manage port interrupts")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 8bb83b78

drivers/net/dsa/b53/b53_srab.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -415,7 +415,13 @@ static int b53_srab_irq_enable(struct b53_device *dev, int port)
		{
		struct b53_srab_priv *priv = dev->priv;
		struct b53_srab_port_priv *p = &priv->port_intrs[port];
		int ret;
		int ret = 0;

		/* Interrupt is optional and was not specified, do not make
		* this fatal
		*/
		if (p->irq == -ENXIO)
		return ret;

		ret = request_threaded_irq(p->irq, b53_srab_port_isr,
		b53_srab_port_thread, 0,

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