3.5.7.12 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Marc Kleine-Budde <m...@pengutronix.de>
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
IRQF_ONESHOT flag.
Reported-by: Mylene Josserand <mylene.josser...@navocap.com>
Tested-by: Mylene Josserand <mylene.josser...@navocap.com>
Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de>
Signed-off-by: Luis Henriques <luis.henriq...@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
+ flags |= IRQF_TRIGGER_FALLING;
+
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)
--
1.8.1.2
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