From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A63BCC4338F for ; Tue, 24 Aug 2021 17:00:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 858F061A63 for ; Tue, 24 Aug 2021 17:00:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238934AbhHXRB2 (ORCPT ); Tue, 24 Aug 2021 13:01:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:39066 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235150AbhHXQ6X (ORCPT ); Tue, 24 Aug 2021 12:58:23 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DC3BF6141B; Tue, 24 Aug 2021 16:57:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629824236; bh=NOIeKdKl4T12gLVcMwf75JzXAJOFAKynCAWhR08rDUA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S/qbSlpJidtwh4X57iz8/7JB3h9+cnzVcw4mClyYvblqpI2O/7EHrif3rq+2QEp4c 0RxsyBSX+jlfHJuBHL/IB9JngWeCkX8iC5JRNyzfi/4qb5ul57Fe2MTGu2E/NmR8pa uudGKOsLl5D38EjagkfqOkvJJxKAPOun4nb7Fl24pZW7SoWhCU2eubQOC02TlJXfZr wbnl4KcWG3NyL+cLoYPwXU1+6DFCLu26N0N0TH2iKsvqm4gUQ2YFuz4ZinSXWn1+6j FBfIxEAjeAhmXlsPXxWcoV081LH2SkRxfl4qlaLtUfGhQTi7jUo/f+bJkIsukGlCwF oXPgmPCuIu/Dg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Oleksij Rempel , "David S . Miller" , Sasha Levin Subject: [PATCH 5.13 069/127] net: usb: asix: refactor asix_read_phy_addr() and handle errors on return Date: Tue, 24 Aug 2021 12:55:09 -0400 Message-Id: <20210824165607.709387-70-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210824165607.709387-1-sashal@kernel.org> References: <20210824165607.709387-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.13.13-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.13.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.13.13-rc1 X-KernelTest-Deadline: 2021-08-26T16:55+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oleksij Rempel [ Upstream commit 7e88b11a862afe59ee0c365123ea5fb96a26cb3b ] Refactor asix_read_phy_addr() to return usable error value directly and make sure all callers handle this error. Signed-off-by: Oleksij Rempel Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/usb/asix.h | 3 +-- drivers/net/usb/asix_common.c | 31 ++++++++++++++++--------------- drivers/net/usb/asix_devices.c | 15 ++++++++++++--- drivers/net/usb/ax88172a.c | 5 +++++ 4 files changed, 34 insertions(+), 20 deletions(-) diff --git a/drivers/net/usb/asix.h b/drivers/net/usb/asix.h index 3b53685301de..edb94efd265e 100644 --- a/drivers/net/usb/asix.h +++ b/drivers/net/usb/asix.h @@ -205,8 +205,7 @@ struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb, int asix_set_sw_mii(struct usbnet *dev, int in_pm); int asix_set_hw_mii(struct usbnet *dev, int in_pm); -int asix_read_phy_addr(struct usbnet *dev, int internal); -int asix_get_phy_addr(struct usbnet *dev); +int asix_read_phy_addr(struct usbnet *dev, bool internal); int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm); diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c index 7bc6e8f856fe..e1109f1a8dd5 100644 --- a/drivers/net/usb/asix_common.c +++ b/drivers/net/usb/asix_common.c @@ -288,32 +288,33 @@ int asix_set_hw_mii(struct usbnet *dev, int in_pm) return ret; } -int asix_read_phy_addr(struct usbnet *dev, int internal) +int asix_read_phy_addr(struct usbnet *dev, bool internal) { - int offset = (internal ? 1 : 0); + int ret, offset; u8 buf[2]; - int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0); - netdev_dbg(dev->net, "asix_get_phy_addr()\n"); + ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0); + if (ret < 0) + goto error; if (ret < 2) { - netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret); - goto out; + ret = -EIO; + goto error; } - netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n", - *((__le16 *)buf)); + + offset = (internal ? 1 : 0); ret = buf[offset]; -out: + netdev_dbg(dev->net, "%s PHY address 0x%x\n", + internal ? "internal" : "external", ret); + return ret; -} -int asix_get_phy_addr(struct usbnet *dev) -{ - /* return the address of the internal phy */ - return asix_read_phy_addr(dev, 1); -} +error: + netdev_err(dev->net, "Error reading PHY_ID register: %02x\n", ret); + return ret; +} int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm) { diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 19a8fafb8f04..fb523734bf31 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -262,7 +262,10 @@ static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf) dev->mii.mdio_write = asix_mdio_write; dev->mii.phy_id_mask = 0x3f; dev->mii.reg_num_mask = 0x1f; - dev->mii.phy_id = asix_get_phy_addr(dev); + + dev->mii.phy_id = asix_read_phy_addr(dev, true); + if (dev->mii.phy_id < 0) + return dev->mii.phy_id; dev->net->netdev_ops = &ax88172_netdev_ops; dev->net->ethtool_ops = &ax88172_ethtool_ops; @@ -717,7 +720,10 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) dev->mii.mdio_write = asix_mdio_write; dev->mii.phy_id_mask = 0x1f; dev->mii.reg_num_mask = 0x1f; - dev->mii.phy_id = asix_get_phy_addr(dev); + + dev->mii.phy_id = asix_read_phy_addr(dev, true); + if (dev->mii.phy_id < 0) + return dev->mii.phy_id; dev->net->netdev_ops = &ax88772_netdev_ops; dev->net->ethtool_ops = &ax88772_ethtool_ops; @@ -1081,7 +1087,10 @@ static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf) dev->mii.phy_id_mask = 0x1f; dev->mii.reg_num_mask = 0xff; dev->mii.supports_gmii = 1; - dev->mii.phy_id = asix_get_phy_addr(dev); + + dev->mii.phy_id = asix_read_phy_addr(dev, true); + if (dev->mii.phy_id < 0) + return dev->mii.phy_id; dev->net->netdev_ops = &ax88178_netdev_ops; dev->net->ethtool_ops = &ax88178_ethtool_ops; diff --git a/drivers/net/usb/ax88172a.c b/drivers/net/usb/ax88172a.c index b404c9462dce..c8ca5187eece 100644 --- a/drivers/net/usb/ax88172a.c +++ b/drivers/net/usb/ax88172a.c @@ -220,6 +220,11 @@ static int ax88172a_bind(struct usbnet *dev, struct usb_interface *intf) } priv->phy_addr = asix_read_phy_addr(dev, priv->use_embdphy); + if (priv->phy_addr < 0) { + ret = priv->phy_addr; + goto free; + } + ax88172a_reset_phy(dev, priv->use_embdphy); /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */ -- 2.30.2