can: mcp251xfd: mcp251xfd_stop(): add missing hrtimer_cancel()

In commit 169d00a25658 ("can: mcp251xfd: add TX IRQ coalescing
support") software based TX coalescing was added to the driver. The
key idea is to keep the TX complete IRQ disabled for some time after
processing it and re-enable later by a hrtimer. When bringing the
interface down, this timer has to be stopped.

Add the missing hrtimer_cancel() of the tx_irq_time hrtimer to
mcp251xfd_stop().

Link: https://lore.kernel.org/all/20220620143942.891811-1-mkl@pengutronix.de
Fixes: 169d00a25658 ("can: mcp251xfd: add TX IRQ coalescing support")
Cc: stable@vger.kernel.org # v5.18
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
index b212523902168eac46f73f902e094e48e5019238..34b160024ce3bbd16642aa3ae14910e6f098cb51 100644 (file)
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
@@ -1650,6 +1650,7 @@ static int mcp251xfd_stop(struct net_device *ndev)
        netif_stop_queue(ndev);
        set_bit(MCP251XFD_FLAGS_DOWN, priv->flags);
        hrtimer_cancel(&priv->rx_irq_timer);
+       hrtimer_cancel(&priv->tx_irq_timer);
        mcp251xfd_chip_interrupts_disable(priv);
        free_irq(ndev->irq, priv);
        can_rx_offload_disable(&priv->offload);