[PATCH] can/peak_pciefd: fix a potential issue of sending frames

Rather than just indicating that transmission can start, this patch
requires the explicit flushing of the network Tx queue when the driver is
informed by the device that it can transmit, next to its configuration.
In this way, if frames have already been written by the application, they
will actually be transmitted.

Signed-off-by: Stephane Grosjean <redacted>
---
 drivers/net/can/peak_canfd/peak_canfd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/can/peak_canfd/peak_canfd.c b/drivers/net/can/peak_canfd/peak_canfd.c
index 00847cbaf7b6..d08718e98e11 100644
--- a/drivers/net/can/peak_canfd/peak_canfd.c
+++ b/drivers/net/can/peak_canfd/peak_canfd.c

@@ -351,8 +351,8 @@ static int pucan_handle_status(struct peak_canfd_priv *priv,
 				return err;
 		}
 
-		/* start network queue (echo_skb array is empty) */
-		netif_start_queue(ndev);
+		/* wake network queue up (echo_skb array is empty) */
+		netif_wake_queue(ndev);
 
 		return 0;
 	}

-- 
2.25.1

On 23.06.2021 16:26:00, Stephane Grosjean wrote:

Rather than just indicating that transmission can start, this patch
requires the explicit flushing of the network Tx queue when the driver is
informed by the device that it can transmit, next to its configuration.
In this way, if frames have already been written by the application, they
will actually be transmitted.

Signed-off-by: Stephane Grosjean <redacted>

Applied to linux-can/testing

Added stable on Cc.

regards,
Marc
-- 
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