diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2020-11-19 13:09:16 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2020-11-20 14:06:46 +0300 |
| commit | 648a34b1d57d65d01784ca3659558794d5c00ae1 (patch) | |
| tree | c7d2ca7e7d8a120ad3b3e424aa835a62ce7d18ce /drivers/net/can/flexcan.c | |
| parent | f3f2a5466578e297f5eeff940c9eb98c4ea5f0b3 (diff) | |
| download | linux-648a34b1d57d65d01784ca3659558794d5c00ae1.tar.xz | |
can: flexcan: flexcan_open(): completely initialize controller before requesting IRQ
This patch changes the order in which the flexcan controller is brought up
during flexcan_open(). It makes sure that the chip is completely initialized
before the IRQs are requested and finally enabled.
Link: https://lore.kernel.org/r/20201119100917.3013281-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/flexcan.c')
| -rw-r--r-- | drivers/net/can/flexcan.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 0705b6384e49..e98368be1669 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -1712,32 +1712,33 @@ static int flexcan_open(struct net_device *dev) if (err) goto out_close; - err = request_irq(dev->irq, flexcan_irq, IRQF_SHARED, dev->name, dev); + err = flexcan_rx_offload_setup(dev); if (err) goto out_transceiver_disable; - err = flexcan_rx_offload_setup(dev); + err = flexcan_chip_start(dev); if (err) - goto out_free_irq; + goto out_can_rx_offload_del; - /* start chip and queuing */ - err = flexcan_chip_start(dev); + can_rx_offload_enable(&priv->offload); + + err = request_irq(dev->irq, flexcan_irq, IRQF_SHARED, dev->name, dev); if (err) - goto out_offload_del; + goto out_can_rx_offload_disable; flexcan_chip_interrupts_enable(dev); can_led_event(dev, CAN_LED_EVENT_OPEN); - can_rx_offload_enable(&priv->offload); netif_start_queue(dev); return 0; - out_offload_del: + out_can_rx_offload_disable: + can_rx_offload_disable(&priv->offload); + flexcan_chip_stop(dev); + out_can_rx_offload_del: can_rx_offload_del(&priv->offload); - out_free_irq: - free_irq(dev->irq, dev); out_transceiver_disable: flexcan_transceiver_disable(priv); out_close: |