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Date:	Thu, 21 Aug 2014 11:23:21 +0200
From:	Marc Kleine-Budde <>
	Alexander Stein <>,
	Marc Kleine-Budde <>
Subject: [PATCH 3/4] can: flexcan: Disable error interrupt when bus error reporting is disabled

From: Alexander Stein <>

In case we don't have FLEXCAN_HAS_BROKEN_ERR_STATE and the user set
CAN_CTRLMODE_BERR_REPORTING once it can not be unset again until reboot.
So in case neither hardware nor user wants the error interrupt disable
the bit.

Signed-off-by: Alexander Stein <>
Signed-off-by: Marc Kleine-Budde <>
 drivers/net/can/flexcan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index f425ec2..a691651 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -852,6 +852,8 @@ static int flexcan_chip_start(struct net_device *dev)
 	if (priv->devtype_data->features & FLEXCAN_HAS_BROKEN_ERR_STATE ||
 	    priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
 		reg_ctrl |= FLEXCAN_CTRL_ERR_MSK;
+	else
+		reg_ctrl &= ~FLEXCAN_CTRL_ERR_MSK;
 	/* save for later use */
 	priv->reg_ctrl_default = reg_ctrl;

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