From 7d12f29ae1d7337e4289baf9e6b4bf79445b0d59 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Thu, 28 Jan 2021 11:49:16 +0100 Subject: bcm63xx: fix bcm63xx ethernet kernel panics MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Calling netdev_reset_queue() from _stop() functions is causing sporadic kernel panics on bcm63xx, which happen mainly on BCM6318 and BCM6328. This reverts to the previous behaviour, which called netdev_reset_queue() from _open() functions. Tested on Comtrend AR-5315u (BCM6318). Fixes: 1d6f422e346b ("bcm63xx: sync ethernet driver with net-next") Signed-off-by: Álvaro Fernández Rojas --- .../047-bcm63xx_enet-fix-kernel-panic.patch | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 target/linux/bcm63xx/patches-5.4/047-bcm63xx_enet-fix-kernel-panic.patch (limited to 'target/linux/bcm63xx/patches-5.4/047-bcm63xx_enet-fix-kernel-panic.patch') diff --git a/target/linux/bcm63xx/patches-5.4/047-bcm63xx_enet-fix-kernel-panic.patch b/target/linux/bcm63xx/patches-5.4/047-bcm63xx_enet-fix-kernel-panic.patch new file mode 100644 index 0000000000..466a64cae1 --- /dev/null +++ b/target/linux/bcm63xx/patches-5.4/047-bcm63xx_enet-fix-kernel-panic.patch @@ -0,0 +1,35 @@ +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -1105,6 +1105,8 @@ static int bcm_enet_open(struct net_devi + else + bcm_enet_adjust_link(dev); + ++ netdev_reset_queue(dev); ++ + netif_start_queue(dev); + return 0; + +@@ -1193,7 +1195,6 @@ static int bcm_enet_stop(struct net_devi + kdev = &priv->pdev->dev; + + netif_stop_queue(dev); +- netdev_reset_queue(dev); + napi_disable(&priv->napi); + if (priv->has_phy) + phy_stop(dev->phydev); +@@ -2267,6 +2268,7 @@ static int bcm_enetsw_open(struct net_de + enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, + ENETDMAC_IRMASK, priv->tx_chan); + ++ netdev_reset_queue(dev); + netif_carrier_on(dev); + netif_start_queue(dev); + +@@ -2348,7 +2350,6 @@ static int bcm_enetsw_stop(struct net_de + + del_timer_sync(&priv->swphy_poll); + netif_stop_queue(dev); +- netdev_reset_queue(dev); + napi_disable(&priv->napi); + del_timer_sync(&priv->rx_timeout); + -- cgit v1.2.3