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Date:	Wed, 30 Apr 2014 13:28:51 -0300
From:	Ezequiel Garcia <>
To:	<>
Cc:	Sebastian Hesselbarth <>,
	Thomas Petazzoni <>,
	Gregory Clement <>,
	Tawfik Bayouk <>,
	Lior Amsalem <>,
	"David S. Miller" <>,
	Ezequiel Garcia <>
Subject: [PATCH v2 for v3.15] net: mvmdio: Check for a valid interrupt instead of an error

The following commit:

commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
Author: Rob Herring <>
Date:   Wed Apr 23 17:57:41 2014 -0500

    of/irq: do irq resolution in platform_get_irq

changed platform_get_irq() which now returns EINVAL and EPROBE_DEFER,
in addition to ENXIO. If there's no interrupt for mvmdio, platform_get_irq()
returns EINVAL, but we currently check only for ENXIO.

Fix this by looking for a positive integer, which is the proper way of
validating a virtual interrupt number.

While at it, add a proper handling for the deferral probe case.

Signed-off-by: Ezequiel Garcia <>
Changes from v1: Handle the deferral probe as well.

 drivers/net/ethernet/marvell/mvmdio.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index b161a52..9d5ced2 100644
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c
@@ -232,7 +232,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
 	dev->err_interrupt = platform_get_irq(pdev, 0);
-	if (dev->err_interrupt != -ENXIO) {
+	if (dev->err_interrupt > 0) {
 		ret = devm_request_irq(&pdev->dev, dev->err_interrupt,
 					IRQF_SHARED, pdev->name, dev);
@@ -241,6 +241,9 @@ static int orion_mdio_probe(struct platform_device *pdev)
 			dev->regs + MVMDIO_ERR_INT_MASK);
+	} else if (dev->err_interrupt == -EPROBE_DEFER) {
+		return -EPROBE_DEFER;

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