can: m_can: m_can_rx_peripheral(): fix RX being blocked by errors

For M_CAN peripherals, m_can_rx_handler() was called with quota = 1, which caused any error handling to block RX from taking place until the next time the IRQ handler is called. This had been observed to cause RX to be blocked indefinitely in some cases. This is fixed by calling m_can_rx_handler with a sensibly high quota. Fixes: f524f82 ("can: m_can: Create a m_can platform framework") Link: https://lore.kernel.org/r/[email protected] Suggested-by: Marc Kleine-Budde <[email protected]> Signed-off-by: Torin Cooper-Bennun <[email protected]> Signed-off-by: Marc Kleine-Budde <[email protected]>
truenas · Mar 16, 2021 · e98d9ee · e98d9ee
1 parent c0e399f
commit e98d9ee
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
@@ -873,7 +873,7 @@ static int m_can_rx_peripheral(struct net_device *dev)
 {
 	struct m_can_classdev *cdev = netdev_priv(dev);
 
-	m_can_rx_handler(dev, 1);
+	m_can_rx_handler(dev, M_CAN_NAPI_WEIGHT);
 
 	m_can_enable_all_interrupts(cdev);