Hi All,

I will fix the failed patches and send to 4.9, 4.14, 4.19, 5.4 , 5.10 and 5.15 stable trees.

Cheers, Biju

-----Original Message----- From: gregkh@linuxfoundation.org gregkh@linuxfoundation.org Sent: 04 January 2023 14:17 To: Biju Das biju.das.jz@bp.renesas.com; leonro@nvidia.com; pabeni@redhat.com Cc: stable@vger.kernel.org Subject: FAILED: patch "[PATCH] ravb: Fix "failed to switch device to config mode" message" failed to apply to 4.9-stable tree

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

Possible dependencies:

c72a7e42592b ("ravb: Fix "failed to switch device to config mode" message during unbind")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From c72a7e42592b2e18d862cf120876070947000d7a Mon Sep 17 00:00:00 2001 From: Biju Das biju.das.jz@bp.renesas.com Date: Wed, 14 Dec 2022 10:51:18 +0000 Subject: [PATCH] ravb: Fix "failed to switch device to config mode" message during unbind

This patch fixes the error "ravb 11c20000.ethernet eth0: failed to switch device to config mode" during unbind.

We are doing register access after pm_runtime_put_sync().

We usually do cleanup in reverse order of init. Currently in remove(), the "pm_runtime_put_sync" is not in reverse order.

Probe reset_control_deassert(rstc); pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev);

remove pm_runtime_put_sync(&pdev->dev); unregister_netdev(ndev); .. ravb_mdio_release(priv); pm_runtime_disable(&pdev->dev);

Consider the call to unregister_netdev() unregister_netdev-

...

unregister_netdevice_queue->rollback_registered_many

that calls the below functions which access the registers after pm_runtime_put_sync()

1. ravb_get_stats
2. ravb_close

Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Cc: stable@vger.kernel.org Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Reviewed-by: Leon Romanovsky leonro@nvidia.com Link: Signed-off-by: Paolo Abeni pabeni@redhat.com

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 33f723a9f471..b4e0fc7f65bd 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2903,12 +2903,12 @@ static int ravb_remove(struct platform_device *pdev) priv->desc_bat_dma); /* Set reset mode */ ravb_write(ndev, CCC_OPC_RESET, CCC);

• pm_runtime_put_sync(&pdev->dev); unregister_netdev(ndev); if (info->nc_queues) netif_napi_del(&priv->napi[RAVB_NC]); netif_napi_del(&priv->napi[RAVB_BE]); ravb_mdio_release(priv);

• pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); reset_control_assert(priv->rstc); free_netdev(ndev);