From 63aad66ddf2c156a5775dae03911d2e281b9de0f Mon Sep 17 00:00:00 2001 From: Sieng Piaw Liew Date: Wed, 24 Feb 2021 09:23:43 +0800 Subject: bcm63xx: rename upstreamed patch MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Patch to fix kernel panic was recently accepted upstream so rename patch and add acked lines to reflect that. Signed-off-by: Sieng Piaw Liew (add the same patch for v5.10) Signed-off-by: Álvaro Fernández Rojas --- .../027-bcm63xx_enet-fix-kernel-panic.patch | 55 -------------------- .../027-v5.12-bcm63xx_enet-fix-kernel-panic.patch | 58 ++++++++++++++++++++++ 2 files changed, 58 insertions(+), 55 deletions(-) delete mode 100644 target/linux/bcm63xx/patches-5.10/027-bcm63xx_enet-fix-kernel-panic.patch create mode 100644 target/linux/bcm63xx/patches-5.10/027-v5.12-bcm63xx_enet-fix-kernel-panic.patch (limited to 'target/linux/bcm63xx/patches-5.10') diff --git a/target/linux/bcm63xx/patches-5.10/027-bcm63xx_enet-fix-kernel-panic.patch b/target/linux/bcm63xx/patches-5.10/027-bcm63xx_enet-fix-kernel-panic.patch deleted file mode 100644 index 6d07c737e7..0000000000 --- a/target/linux/bcm63xx/patches-5.10/027-bcm63xx_enet-fix-kernel-panic.patch +++ /dev/null @@ -1,55 +0,0 @@ -From ca6be00ca1d3a2f5b8794894e2dae175e63768f5 Mon Sep 17 00:00:00 2001 -From: Sieng Piaw Liew -Date: Tue, 16 Feb 2021 16:23:08 +0800 -Subject: [PATCH] bcm63xx_enet: Fix sporadic kernel panic - -In ndo_stop functions, netdev_completed_queue() is called during forced -tx reclaim, after netdev_reset_queue(). This may trigger kernel panic if -there is any tx skb left. - -This patch moves netdev_reset_queue() to after tx reclaim, so BQL can -complete successfully then reset. - -Signed-off-by: Sieng Piaw Liew ---- - drivers/net/ethernet/broadcom/bcm63xx_enet.c | 8 ++++++-- - 1 file changed, 6 insertions(+), 2 deletions(-) - ---- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c -+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c -@@ -1192,7 +1192,6 @@ 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); -@@ -1231,6 +1230,9 @@ static int bcm_enet_stop(struct net_devi - if (priv->has_phy) - phy_disconnect(dev->phydev); - -+ /* reset BQL after forced tx reclaim to not kernel panic */ -+ netdev_reset_queue(dev); -+ - return 0; - } - -@@ -2343,7 +2345,6 @@ 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); - -@@ -2371,6 +2372,9 @@ static int bcm_enetsw_stop(struct net_de - free_irq(priv->irq_tx, dev); - free_irq(priv->irq_rx, dev); - -+ /* reset BQL after forced tx reclaim to not kernel panic */ -+ netdev_reset_queue(dev); -+ - return 0; - } - diff --git a/target/linux/bcm63xx/patches-5.10/027-v5.12-bcm63xx_enet-fix-kernel-panic.patch b/target/linux/bcm63xx/patches-5.10/027-v5.12-bcm63xx_enet-fix-kernel-panic.patch new file mode 100644 index 0000000000..727a380348 --- /dev/null +++ b/target/linux/bcm63xx/patches-5.10/027-v5.12-bcm63xx_enet-fix-kernel-panic.patch @@ -0,0 +1,58 @@ +From 90eda07518ea7e8d1b3e6445eb3633eef9f65218 Mon Sep 17 00:00:00 2001 +From: Sieng Piaw Liew +Date: Mon, 22 Feb 2021 09:15:12 +0800 +Subject: [PATCH net] bcm63xx_enet: fix sporadic kernel panic + +In ndo_stop functions, netdev_completed_queue() is called during forced +tx reclaim, after netdev_reset_queue(). This may trigger kernel panic if +there is any tx skb left. + +This patch moves netdev_reset_queue() to after tx reclaim, so BQL can +complete successfully then reset. + +Signed-off-by: Sieng Piaw Liew +Acked-by: Florian Fainelli +Fixes: 4c59b0f5543d ("bcm63xx_enet: add BQL support") +Signed-off-by: Jakub Kicinski +--- + drivers/net/ethernet/broadcom/bcm63xx_enet.c | 8 ++++++-- + 1 file changed, 6 insertions(+), 2 deletions(-) + +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -1192,7 +1192,6 @@ 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); +@@ -1231,6 +1230,9 @@ static int bcm_enet_stop(struct net_devi + if (priv->has_phy) + phy_disconnect(dev->phydev); + ++ /* reset BQL after forced tx reclaim to not kernel panic */ ++ netdev_reset_queue(dev); ++ + return 0; + } + +@@ -2343,7 +2345,6 @@ 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); + +@@ -2371,6 +2372,9 @@ static int bcm_enetsw_stop(struct net_de + free_irq(priv->irq_tx, dev); + free_irq(priv->irq_rx, dev); + ++ /* reset BQL after forced tx reclaim to not kernel panic */ ++ netdev_reset_queue(dev); ++ + return 0; + } + -- cgit v1.2.3