[3.5.y.z,extended,stable] Patch "can: mcp251x: add missing IRQF_ONESHOT to" has been added to staging queue

Message ID 1366634306-16700-1-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques April 22, 2013, 12:38 p.m.
This is a note to let you know that I have just added a patch titled

    can: mcp251x: add missing IRQF_ONESHOT to

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see



From 4d95fd73936e7f2ad2cc6cc5ea135c2309a08754 Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Thu, 11 Apr 2013 10:08:27 +0200
Subject: [PATCH] can: mcp251x: add missing IRQF_ONESHOT to

commit db388d6460ffa53b3b38429da6f70a913f89b048 upstream.

Since commit:

    1c6c695 genirq: Reject bogus threaded irq requests

threaded irqs must provide a primary handler or set the IRQF_ONESHOT flag.
Since the mcp251x driver doesn't make use of a primary handler set the

Reported-by: Mylene Josserand <Mylene.Josserand@navocap.com>
Tested-by: Mylene Josserand <Mylene.Josserand@navocap.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
 drivers/net/can/mcp251x.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)



diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index 9d60742..a17c048 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -922,6 +922,7 @@  static int mcp251x_open(struct net_device *net)
 	struct mcp251x_priv *priv = netdev_priv(net);
 	struct spi_device *spi = priv->spi;
 	struct mcp251x_platform_data *pdata = spi->dev.platform_data;
+	unsigned long flags;
 	int ret;

 	ret = open_candev(net);
@@ -938,9 +939,14 @@  static int mcp251x_open(struct net_device *net)
 	priv->tx_skb = NULL;
 	priv->tx_len = 0;

+	flags = IRQF_ONESHOT;
+	if (pdata->irq_flags)
+		flags |= pdata->irq_flags;
+	else
 	ret = request_threaded_irq(spi->irq, NULL, mcp251x_can_ist,
-		  pdata->irq_flags ? pdata->irq_flags : IRQF_TRIGGER_FALLING,
-		  DEVICE_NAME, priv);
+				   flags, DEVICE_NAME, priv);
 	if (ret) {
 		dev_err(&spi->dev, "failed to acquire irq %d\n", spi->irq);
 		if (pdata->transceiver_enable)