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 9E29F79C0 for ; Wed, 30 Nov 2022 18:46:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FC87C433D7; Wed, 30 Nov 2022 18:46:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669833993; bh=GAMxbUYk8UprgOU1nHeR2JMofdOYLIDWAHDdqqF8g2M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HXafsJaGf6zEM+dAWm1oAQ6Bkc8wVz0gTT8sgFm+lKZcyAbqP6ATZjpsqMYuO66yJ b8C4+3nNq+V8JrTHjG4OujGMd9TQQ0K3Jt/8A4OySTbSSPWokgisWaOYtsskN8+nEk ydjfbs0R17AqwDyMUO082B13SCCAD50U5Kz96mZs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Liu Jian , "Russell King (Oracle)" , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.0 090/289] net: ethernet: mtk_eth_soc: fix error handling in mtk_open() Date: Wed, 30 Nov 2022 19:21:15 +0100 Message-Id: <20221130180546.185676725@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221130180544.105550592@linuxfoundation.org> References: <20221130180544.105550592@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: Liu Jian [ Upstream commit f70074140524c59a0935947b06dd6cb6e1ea642d ] If mtk_start_dma() fails, invoke phylink_disconnect_phy() to perform cleanup. phylink_disconnect_phy() contains the put_device action. If phylink_disconnect_phy is not performed, the Kref of netdev will leak. Fixes: b8fc9f30821e ("net: ethernet: mediatek: Add basic PHYLINK support") Signed-off-by: Liu Jian Reviewed-by: Russell King (Oracle) Link: https://lore.kernel.org/r/20221117111356.161547-1-liujian56@huawei.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 84433f3a3e22..a75f5931f746 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2979,8 +2979,10 @@ static int mtk_open(struct net_device *dev) u32 gdm_config = MTK_GDMA_TO_PDMA; err = mtk_start_dma(eth); - if (err) + if (err) { + phylink_disconnect_phy(mac->phylink); return err; + } if (eth->soc->offload_version && mtk_ppe_start(eth->ppe) == 0) gdm_config = MTK_GDMA_TO_PPE; -- 2.35.1