netdev - [PATCH v2 net-next 2/6] net: dsa: mv88e6xxx: Fix unconditional irq freeing

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Date:   Sun, 20 Nov 2016 20:14:15 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     David Miller <davem@...emloft.net>
Cc:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        netdev <netdev@...r.kernel.org>, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH v2 net-next 2/6] net: dsa: mv88e6xxx: Fix unconditional irq freeing

Trying to remove an IRQ domain that was not created results in an
Opps. Add the necessary checks that the irqs were created before
freeing them.

Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 6aa81d2d8f63..b843052d32bd 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3897,10 +3897,11 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 out_mdio:
 	mv88e6xxx_mdio_unregister(chip);
 out_g2_irq:
-	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_INT))
+	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_INT) && chip->irq > 0)
 		mv88e6xxx_g2_irq_free(chip);
 out_g1_irq:
-	mv88e6xxx_g1_irq_free(chip);
+	if (chip->irq > 0)
+		mv88e6xxx_g1_irq_free(chip);
 out:
 	return err;
 }
@@ -3914,9 +3915,11 @@ static void mv88e6xxx_remove(struct mdio_device *mdiodev)
 	mv88e6xxx_unregister_switch(chip);
 	mv88e6xxx_mdio_unregister(chip);
 
-	if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_INT))
-		mv88e6xxx_g2_irq_free(chip);
-	mv88e6xxx_g1_irq_free(chip);
+	if (chip->irq > 0) {
+		if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_INT))
+			mv88e6xxx_g2_irq_free(chip);
+		mv88e6xxx_g1_irq_free(chip);
+	}
 }
 
 static const struct of_device_id mv88e6xxx_of_match[] = {
-- 
2.10.2