From patchwork Fri Mar 11 08:50:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 12777688 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CCA1C433F5 for ; Fri, 11 Mar 2022 08:50:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242006AbiCKIvc (ORCPT ); Fri, 11 Mar 2022 03:51:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241486AbiCKIv3 (ORCPT ); Fri, 11 Mar 2022 03:51:29 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCEF31BAF06 for ; Fri, 11 Mar 2022 00:50:26 -0800 (PST) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nSayY-0004dq-AT; Fri, 11 Mar 2022 09:50:18 +0100 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nSayV-00552m-My; Fri, 11 Mar 2022 09:50:15 +0100 From: Oleksij Rempel To: "David S. Miller" , Jakub Kicinski , Andrew Lunn , Heiner Kallweit , Russell King Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, paskripkin@gmail.com Subject: [PATCH net-next v2 2/4] net: usb: asix: store chipid to avoid reading it on reset Date: Fri, 11 Mar 2022 09:50:12 +0100 Message-Id: <20220311085014.1210963-2-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220311085014.1210963-1-o.rempel@pengutronix.de> References: <20220311085014.1210963-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-usb@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org We already read chipid on probe. There is no need to read it on reset. Signed-off-by: Oleksij Rempel --- drivers/net/usb/asix.h | 1 + drivers/net/usb/asix_devices.c | 19 +++++++------------ 2 files changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/net/usb/asix.h b/drivers/net/usb/asix.h index b5ac693cebf2..691f37f45238 100644 --- a/drivers/net/usb/asix.h +++ b/drivers/net/usb/asix.h @@ -186,6 +186,7 @@ struct asix_common_private { u16 phy_addr; char phy_name[20]; bool embd_phy; + u8 chipcode; }; extern const struct driver_info ax88172a_info; diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 28bb98cdfa33..a0c02cd53472 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -450,7 +450,6 @@ static int ax88772a_hw_reset(struct usbnet *dev, int in_pm) struct asix_data *data = (struct asix_data *)&dev->data; struct asix_common_private *priv = dev->driver_priv; u16 rx_ctl, phy14h, phy15h, phy16h; - u8 chipcode = 0; int ret; ret = asix_write_gpio(dev, AX_GPIO_RSE, 5, in_pm); @@ -493,12 +492,7 @@ static int ax88772a_hw_reset(struct usbnet *dev, int in_pm) goto out; } - ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, - 0, 1, &chipcode, in_pm); - if (ret < 0) - goto out; - - if ((chipcode & AX_CHIPCODE_MASK) == AX_AX88772B_CHIPCODE) { + if (priv->chipcode == AX_AX88772B_CHIPCODE) { ret = asix_write_cmd(dev, AX_QCTCTRL, 0x8000, 0x8001, 0, NULL, in_pm); if (ret < 0) { @@ -506,7 +500,7 @@ static int ax88772a_hw_reset(struct usbnet *dev, int in_pm) ret); goto out; } - } else if ((chipcode & AX_CHIPCODE_MASK) == AX_AX88772A_CHIPCODE) { + } else if (priv->chipcode == AX_AX88772A_CHIPCODE) { /* Check if the PHY registers have default settings */ phy14h = asix_mdio_read_nopm(dev->net, dev->mii.phy_id, AX88772A_PHY14H); @@ -689,8 +683,8 @@ static int ax88772_init_phy(struct usbnet *dev) static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) { - u8 buf[ETH_ALEN] = {0}, chipcode = 0; struct asix_common_private *priv; + u8 buf[ETH_ALEN] = {0}; int ret, i; priv = devm_kzalloc(&dev->udev->dev, sizeof(*priv), GFP_KERNEL); @@ -741,17 +735,18 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) priv->phy_addr = ret; priv->embd_phy = ((priv->phy_addr & 0x1f) == 0x10); - ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, 0, 1, &chipcode, 0); + ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, 0, 1, + &priv->chipcode, 0); if (ret < 0) { netdev_dbg(dev->net, "Failed to read STATMNGSTS_REG: %d\n", ret); return ret; } - chipcode &= AX_CHIPCODE_MASK; + priv->chipcode &= AX_CHIPCODE_MASK; priv->resume = ax88772_resume; priv->suspend = ax88772_suspend; - if (chipcode == AX_AX88772_CHIPCODE) + if (priv->chipcode == AX_AX88772_CHIPCODE) priv->reset = ax88772_hw_reset; else priv->reset = ax88772a_hw_reset;