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can: mcp251xfd: mcp251xfd_irq(): add missing can_rx_offload_threaded_irq_finish() in case of bus off

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The function can_rx_offload_threaded_irq_finish() is needed to trigger
the NAPI thread to deliver read CAN frames to the networking stack.

This patch adds the missing call to can_rx_offload_threaded_irq_finish()
in case of a bus off, before leaving the interrupt handler to avoid
packet starvation.

Link: https://lore.kernel.org/all/20211106201526.44292-1-mkl@pengutronix.de
Fixes: 30bfec4fec ("can: rx-offload: can_rx_offload_threaded_irq_finish(): add new function to be called from threaded interrupt")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2021-10-15 19:46:59 +02:00
parent 6b78ba3e51
commit 691204bd66
1 changed files with 3 additions and 1 deletions
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4
drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
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@ -2290,8 +2290,10 @@ static irqreturn_t mcp251xfd_irq(int irq, void *dev_id)
* check will fail, too. So leave IRQ handler
* directly.
*/
if (priv->can.state == CAN_STATE_BUS_OFF)
if (priv->can.state == CAN_STATE_BUS_OFF) {
can_rx_offload_threaded_irq_finish(&priv->offload);
return IRQ_HANDLED;
}
}
handled = IRQ_HANDLED;