From a1e654070a60d5d4f7cce59c38f4ca790bb79121 Mon Sep 17 00:00:00 2001
From: Alejandro Concepcion Rodriguez <alejandro@acoro.eu>
Date: Thu, 5 Nov 2020 21:51:47 +0000
Subject: [PATCH] can: dev: can_restart(): post buffer from the right context
Git-commit: a1e654070a60d5d4f7cce59c38f4ca790bb79121
Patch-mainline: v5.10-rc5
References: git-fixes

netif_rx() is meant to be called from interrupt contexts. can_restart() may be
called by can_restart_work(), which is called from a worqueue, so it may run in
process context. Use netif_rx_ni() instead.

Fixes: 39549eef3587 ("can: CAN Network device driver and Netlink interface")
Co-developed-by: Loris Fauster <loris.fauster@ttcontrol.com>
Signed-off-by: Loris Fauster <loris.fauster@ttcontrol.com>
Signed-off-by: Alejandro Concepcion Rodriguez <alejandro@acoro.eu>
Link: https://lore.kernel.org/r/4e84162b-fb31-3a73-fa9a-9438b4bd5234@acoro.eu
[mkl: use netif_rx_ni() instead of netif_rx_any_context()]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/can/dev.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -578,7 +578,7 @@ static void can_restart(struct net_devic
 	}
 	cf->can_id |= CAN_ERR_RESTARTED;
 
-	netif_rx(skb);
+	netif_rx_ni(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;