can: flexcan: flexcan_open(): fix error path if flexcan_chip_start() fails

commit 7e9e148af01ef388efb6e2490805970be4622792 upstream.

If flexcan_chip_start() in flexcan_open() fails, the interrupt is not freed,
this patch adds the missing cleanup.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index f63169d..6d388cf 100644 (file)
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -862,7 +862,7 @@ static int flexcan_open(struct net_device *dev)
        /* start chip and queuing */
        err = flexcan_chip_start(dev);
        if (err)
-               goto out_close;
+               goto out_free_irq;
 
        can_led_event(dev, CAN_LED_EVENT_OPEN);
 
@@ -871,6 +871,8 @@ static int flexcan_open(struct net_device *dev)
 
        return 0;
 
+ out_free_irq:
+       free_irq(dev->irq, dev);
  out_close:
        close_candev(dev);
  out: