diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-10-15 20:46:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-18 21:16:03 +0300 |
| commit | 0c10d5d395632c314c6356812728a73f88f0f5e8 (patch) | |
| tree | f7c87b35eb5779091b80a6ae90896c3c521cbec8 /drivers/net/can | |
| parent | dac06227e1a3869800dd3618aaa068d5d777931c (diff) | |
| download | linux-0c10d5d395632c314c6356812728a73f88f0f5e8.tar.xz | |
can: mcp251xfd: mcp251xfd_irq(): add missing can_rx_offload_threaded_irq_finish() in case of bus off
commit 691204bd66b34ba982e19988e6eba9f6321dfe6c upstream.
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: 30bfec4fec59 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c index 673861ab665a..212fcd1554e4 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c @@ -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; |