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 B8AD279C0 for ; Wed, 30 Nov 2022 18:36:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3955BC433D7; Wed, 30 Nov 2022 18:36:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669833390; bh=WXzY7x+jsNlns8nvHitqaVh3CDUHr+hFeWFNMUqBXsI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0U6UakBJSdLQU1vLjJkKbOtyewcl135WqTKtkwSKwSvmSoOCBufC9JxAe8lb+4dQy c/tRQumshV2wPdz7IW6okNF3t3BFE4HSnZH3gtKWot8RgVCG0TQ95DHED9OwkITpY+ cHn1MnT268TKrJvw4S1hyYUCq/TpeJekQ7O+1zlM= 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 5.15 089/206] net: ethernet: mtk_eth_soc: fix error handling in mtk_open() Date: Wed, 30 Nov 2022 19:22:21 +0100 Message-Id: <20221130180535.277472395@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221130180532.974348590@linuxfoundation.org> References: <20221130180532.974348590@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 8601ef26c260..cc6a5b2f24e3 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2327,8 +2327,10 @@ static int mtk_open(struct net_device *dev) int err; err = mtk_start_dma(eth); - if (err) + if (err) { + phylink_disconnect_phy(mac->phylink); return err; + } if (eth->soc->offload_version && mtk_ppe_start(ð->ppe) == 0) gdm_config = MTK_GDMA_TO_PPE; -- 2.35.1