diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2019-10-09 07:41:08 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-07-25 12:36:25 +0300 |
| commit | c757096ea1033c46ab768709847f7776b7e92a92 (patch) | |
| tree | 4266fd517670b9a1c62c49a8375ee5139470199b /drivers/net/can/m_can | |
| parent | a08ec5fe709fe0d9fbd524ca6dcf6c41320d5bf3 (diff) | |
| download | linux-c757096ea1033c46ab768709847f7776b7e92a92.tar.xz | |
can: rx-offload: add skb queue for use during ISR
Adding a skb to the skb_queue in rx-offload requires to take a lock.
This commit avoids this by adding an unlocked skb queue that is
appended at the end of the ISR. Having one lock at the end of the ISR
should be OK as the HW is empty, not about to overflow.
Link: https://lore.kernel.org/r/20210724204745.736053-2-mkl@pengutronix.de
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Co-developed-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/m_can')
| -rw-r--r-- | drivers/net/can/m_can/m_can.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index bba2a449ac70..18461982f7a1 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -1058,6 +1058,9 @@ static irqreturn_t m_can_isr(int irq, void *dev_id) } } + if (cdev->is_peripheral) + can_rx_offload_irq_finish(&cdev->offload); + return IRQ_HANDLED; } |