From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 744766136; Mon, 23 Jun 2025 21:38:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750714701; cv=none; b=VmG8jft/xi8E9J3HheUm1rEO6PUBjdoHJiEOr8bCNK+SeRG9RpCr2fb/i7ahpG9MW2QJTZtS4qH+0grfpoug2H0BXZeeHNhrk7tyVpCqYPTyR2410rzNePyAS4RcGLVqkQl3c9v0yhFbms4IuGLnEu/DUM6m1elmmg07/QN819M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750714701; c=relaxed/simple; bh=ffb+uBz0L93L7zLzVbks+qHOp089RbrQbZj5j4zmfTA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Dsl5Z+TabeDpd2kXH7fQVq1at6FZy78b4O5MggwEaq/s4iMpYVbKDXJNu32Gyq5GHVjupp9DMCcRAtk2hvXrMGTdQCEDmaQwgyB7aAoN9sYTpFHbiBy4HEVwJSZvhOn6t16/7zeUr61SYEJ/iG1wZ2/2+MA/cjCLg7wxEoHqkuw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=f7SLKx2F; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="f7SLKx2F" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C505C4CEEA; Mon, 23 Jun 2025 21:38:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750714701; bh=ffb+uBz0L93L7zLzVbks+qHOp089RbrQbZj5j4zmfTA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f7SLKx2F5BBT6bgqnV0RFRPQcCF8p8gm8LVCx+25nGIdGCSeywiYJG0na0Xi4mcCS qxc6QGSFVzCdolhZcu3rP70bQDt2TtHAytB6EqFYTNhjSRoXCl9brilbxm6v55MAnX 0M7I2zWBnQzug73Y9HVeMqCF9scuFz4MAlcWB2o4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michael Walle , Andrew Lunn , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.15 399/592] net: ethernet: ti: am65-cpsw: handle -EPROBE_DEFER Date: Mon, 23 Jun 2025 15:05:57 +0200 Message-ID: <20250623130709.933519352@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130700.210182694@linuxfoundation.org> References: <20250623130700.210182694@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Walle [ Upstream commit 09737cb80b8686ffca4ed1805fee745d5c85604d ] of_get_mac_address() might fetch the MAC address from NVMEM and that driver might not have been loaded. In that case, -EPROBE_DEFER is returned. Right now, this will trigger an immediate fallback to am65_cpsw_am654_get_efuse_macid() possibly resulting in a random MAC address although the MAC address is stored in the referenced NVMEM. Fix it by handling the -EPROBE_DEFER return code correctly. This also means that the creation of the MDIO device has to be moved to a later stage as -EPROBE_DEFER must not be returned after child devices are created. Signed-off-by: Michael Walle Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20250414084336.4017237-3-mwalle@kernel.org Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 30665ffe78cf9..4cec05e0e3d9b 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -2679,7 +2679,9 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common) goto of_node_put; ret = of_get_mac_address(port_np, port->slave.mac_addr); - if (ret) { + if (ret == -EPROBE_DEFER) { + goto of_node_put; + } else if (ret) { am65_cpsw_am654_get_efuse_macid(port_np, port->port_id, port->slave.mac_addr); @@ -3561,6 +3563,16 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev) return ret; } + am65_cpsw_nuss_get_ver(common); + + ret = am65_cpsw_nuss_init_host_p(common); + if (ret) + goto err_pm_clear; + + ret = am65_cpsw_nuss_init_slave_ports(common); + if (ret) + goto err_pm_clear; + node = of_get_child_by_name(dev->of_node, "mdio"); if (!node) { dev_warn(dev, "MDIO node not found\n"); @@ -3577,16 +3589,6 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev) } of_node_put(node); - am65_cpsw_nuss_get_ver(common); - - ret = am65_cpsw_nuss_init_host_p(common); - if (ret) - goto err_of_clear; - - ret = am65_cpsw_nuss_init_slave_ports(common); - if (ret) - goto err_of_clear; - /* init common data */ ale_params.dev = dev; ale_params.ale_ageout = AM65_CPSW_ALE_AGEOUT_DEFAULT; -- 2.39.5