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

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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: 16994374a6 ("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>
This commit is contained in:
Florian Fainelli 2018-09-13 09:50:45 -07:00 committed by David S. Miller
parent 8bb83b7838
commit b2ddc48a81
1 changed files with 7 additions and 1 deletions
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8
drivers/net/dsa/b53/b53_srab.c
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@ -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,