From: Stephane Grosjean <s.grosjean@peak-system.com> stable inclusion from stable-5.10.50 commit 507925fff036e0ddc3de406639b73e7ddc4a7e8b bugzilla: 174522 https://gitee.com/openeuler/kernel/issues/I4DNFY Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- commit b17233d385d0b6b43ecf81d43008cb1bbb008166 upstream. 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. Fixes: ffd137f7043c ("can: peak/pcie_fd: remove useless code when interface starts") Link: https://lore.kernel.org/r/20210623142600.149904-1-s.grosjean@peak-system.com Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- 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 40c33b8a5fda..ac5801a98680 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; } -- 2.20.1