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| author |   Florian Fainelli <f.fainelli@gmail.com> | 2018-09-13 09:50:45 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-09-13 10:19:14 -0700 |
| commit | b2ddc48a81b564a3cadcfd60698259d2b0f2cb47 (patch) | |
| tree | 5b899bca04784514a62d45964842594373033dfb /drivers/net/dsa | |
| parent | Merge branch 'vhost_net-TX-batching' (diff) | |
| download | linux-dev-b2ddc48a81b564a3cadcfd60698259d2b0f2cb47.tar.xz linux-dev-b2ddc48a81b564a3cadcfd60698259d2b0f2cb47.zip | |
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: 16994374a6fc ("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>
Diffstat (limited to 'drivers/net/dsa')
| -rw-r--r-- | drivers/net/dsa/b53/b53_srab.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/dsa/b53/b53_srab.c b/drivers/net/dsa/b53/b53_srab.c index 321052732799..90f514252987 100644 --- a/drivers/net/dsa/b53/b53_srab.c +++ b/drivers/net/dsa/b53/b53_srab.c @@ -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, |