linux-kernel - [PATCH 1/5] ARCNET: return IRQ_NONE if the interface isn't running

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Date:	Wed, 24 Sep 2014 13:01:59 +0200
From:	Michael Grzeschik <m.grzeschik@...gutronix.de>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: [PATCH 1/5] ARCNET: return IRQ_NONE if the interface isn't running

The interrupt handler needs to return IRQ_NONE in case
two devices are used with the shared interrupt handler.
Otherwise it could steal interrupts from the other
interface.

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
---
 drivers/net/arcnet/arcnet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index a956053..abcbd3c 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -776,7 +776,7 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id)
 			ACOMMAND(CFLAGScmd | RESETclear);
 		AINTMASK(0);
 		spin_unlock(&lp->lock);
-		return IRQ_HANDLED;
+		return retval;
 	}
 
 	BUGMSG(D_DURING, "in arcnet_inthandler (status=%Xh, intmask=%Xh)\n",
-- 
2.1.0

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