From patchwork Thu Feb 4 11:31:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Efstathiades X-Patchwork-Id: 12067239 X-Patchwork-Delegate: kuba@kernel.org 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 324BDC433E0 for ; Thu, 4 Feb 2021 12:02:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E87D664F42 for ; Thu, 4 Feb 2021 12:02:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235843AbhBDMCi (ORCPT ); Thu, 4 Feb 2021 07:02:38 -0500 Received: from ares.krystal.co.uk ([77.72.0.130]:35078 "EHLO ares.krystal.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235799AbhBDMCh (ORCPT ); Thu, 4 Feb 2021 07:02:37 -0500 Received: from [51.148.178.73] (port=37344 helo=pbcl-dsk8.fritz.box) by ares.krystal.co.uk with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.93) (envelope-from ) id 1l7cro-008lpZ-2s; Thu, 04 Feb 2021 11:32:08 +0000 From: John Efstathiades Cc: UNGLinuxDriver@microchip.com, davem@davemloft.net, netdev@vger.kernel.org, john.efstathiades@pebblebay.com Subject: [PATCH net-next 6/9] lan78xx: reduce number of register access failure warnings Date: Thu, 4 Feb 2021 11:31:18 +0000 Message-Id: <20210204113121.29786-7-john.efstathiades@pebblebay.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210204113121.29786-1-john.efstathiades@pebblebay.com> References: <20210204113121.29786-1-john.efstathiades@pebblebay.com> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ares.krystal.co.uk X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - pebblebay.com X-Get-Message-Sender-Via: ares.krystal.co.uk: authenticated_id: john.efstathiades@pebblebay.com X-Authenticated-Sender: ares.krystal.co.uk: john.efstathiades@pebblebay.com To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org When the device is disconnected attempts to access device registers via the control endpoint will fail. This can result in a stream of warning messages in the kernel log. Use net_ratelimit() to limit the number of warning messages emitted following device disconnection. Signed-off-by: John Efstathiades --- drivers/net/usb/lan78xx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 7c815061e02e..a4278f9dc319 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -624,7 +624,7 @@ static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) if (likely(ret >= 0)) { le32_to_cpus(buf); *data = *buf; - } else { + } else if (net_ratelimit()) { netdev_warn(dev->net, "Failed to read register index 0x%08x. ret = %d", index, ret); @@ -654,7 +654,8 @@ static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, buf, 4, USB_CTRL_SET_TIMEOUT); - if (unlikely(ret < 0)) { + if (unlikely(ret < 0) && + net_ratelimit()) { netdev_warn(dev->net, "Failed to write register index 0x%08x. ret = %d", index, ret);