From patchwork Mon Oct 25 14:11:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oliver Neukum X-Patchwork-Id: 12581899 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26E5EC433F5 for ; Mon, 25 Oct 2021 14:11:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D1F161040 for ; Mon, 25 Oct 2021 14:11:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233374AbhJYONs (ORCPT ); Mon, 25 Oct 2021 10:13:48 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:49856 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233384AbhJYONr (ORCPT ); Mon, 25 Oct 2021 10:13:47 -0400 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id B09CD2193C; Mon, 25 Oct 2021 14:11:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1635171084; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=OTjSY7GSGw0G3NioSQABoRLAMGiPnBKkRoos8pwLTqc=; b=kiuorOvH9YQGwEpt5DZ2I/rRf3/sB3+Zyrlf1dm9zZxWCtXjAGcLAub6ReU0t8ULp4sxry 2vsPdeRIrbb70ZzJhm1L+z0gIBbChLxXEdkOKTkNhBXQImZhtxHvqOKhrAOac+WSdLNnwl jTtvNJWvkJrXNWgni7A2jVf9J6bN34g= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 6F04C13C0B; Mon, 25 Oct 2021 14:11:24 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id OjXyGAy7dmG6cgAAMHmgww (envelope-from ); Mon, 25 Oct 2021 14:11:24 +0000 From: Oliver Neukum To: netdev@vger.kernel.org, linux-usb@vger.kernel.org, davem@davemloft.net, kuba@kernel.org Cc: Oliver Neukum Subject: [PATCH] usbb: catc: use correct API for MAC addresses Date: Mon, 25 Oct 2021 16:11:21 +0200 Message-Id: <20211025141121.14828-1-oneukum@suse.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Commit 406f42fa0d3c ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. In the case of catc we need a new temporary buffer to conform to the rules for DMA coherency. That in turn necessitates a reworking of error handling in probe(). Signed-off-by: Oliver Neukum --- drivers/net/usb/catc.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/catc.c b/drivers/net/usb/catc.c index 24db5768a3c0..e7fe9c0f63a9 100644 --- a/drivers/net/usb/catc.c +++ b/drivers/net/usb/catc.c @@ -770,17 +770,23 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id struct net_device *netdev; struct catc *catc; u8 broadcast[ETH_ALEN]; - int pktsz, ret; + u8 *macbuf; + int pktsz, ret = -ENOMEM; + + macbuf = kmalloc(ETH_ALEN, GFP_KERNEL); + if (!macbuf) + goto error; if (usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 1)) { dev_err(dev, "Can't set altsetting 1.\n"); - return -EIO; + ret = -EIO; + goto fail_mem;; } netdev = alloc_etherdev(sizeof(struct catc)); if (!netdev) - return -ENOMEM; + goto fail_mem; catc = netdev_priv(netdev); @@ -870,7 +876,8 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id dev_dbg(dev, "Getting MAC from SEEROM.\n"); - catc_get_mac(catc, netdev->dev_addr); + catc_get_mac(catc, macbuf); + eth_hw_addr_set(netdev, macbuf); dev_dbg(dev, "Setting MAC into registers.\n"); @@ -899,7 +906,8 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id } else { dev_dbg(dev, "Performing reset\n"); catc_reset(catc); - catc_get_mac(catc, netdev->dev_addr); + catc_get_mac(catc, macbuf); + eth_hw_addr_set(netdev, macbuf); dev_dbg(dev, "Setting RX Mode\n"); catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast; @@ -917,6 +925,7 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id if (ret) goto fail_clear_intfdata; + kfree(macbuf); return 0; fail_clear_intfdata: @@ -927,6 +936,9 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id usb_free_urb(catc->rx_urb); usb_free_urb(catc->irq_urb); free_netdev(netdev); +fail_mem: + kfree(macbuf); +error: return ret; }