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 1C21F15C83 for ; Mon, 5 Dec 2022 19:36:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 693A8C433D7; Mon, 5 Dec 2022 19:36:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670268965; bh=Y32JCEND5PmAFK+0ZFXTwHH+IP43LtcrVYGs+1n1aWo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z1uAeuL+WPdinEXR2VvWir0Tmd3fvUrSOyoH77RBV5tnhHNcKO0UZZLS5ydN07piD 5HjJIQYZTTA6r7tpY0s1hhyB09mTa2zgsY/Wl88GGu1rfIx7CqYRvOXczutbfkZg9P yErSheFH1kGDuUnFwIgL6t2xoACLg51yowqPq7TA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhang Changzhong , Maciej Fijalkowski , "David S. Miller" , Sasha Levin Subject: [PATCH 5.15 049/120] net: ethernet: ti: am65-cpsw: fix error handling in am65_cpsw_nuss_probe() Date: Mon, 5 Dec 2022 20:09:49 +0100 Message-Id: <20221205190808.058708357@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221205190806.528972574@linuxfoundation.org> References: <20221205190806.528972574@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Zhang Changzhong [ Upstream commit 46fb6512538d201d9a5b2bd7138b6751c37fdf0b ] The am65_cpsw_nuss_cleanup_ndev() function calls unregister_netdev() even if register_netdev() fails, which triggers WARN_ON(1) in unregister_netdevice_many(). To fix it, make sure that unregister_netdev() is called only on registered netdev. Compile tested only. Fixes: 84b4aa493249 ("net: ethernet: ti: am65-cpsw: add multi port support in mac-only mode") Signed-off-by: Zhang Changzhong Reviewed-by: Maciej Fijalkowski Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 901571c2626a..2298b3c38f89 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -2054,7 +2054,7 @@ static void am65_cpsw_nuss_cleanup_ndev(struct am65_cpsw_common *common) for (i = 0; i < common->port_num; i++) { port = &common->ports[i]; - if (port->ndev) + if (port->ndev && port->ndev->reg_state == NETREG_REGISTERED) unregister_netdev(port->ndev); } } -- 2.35.1