From patchwork Fri Sep 18 11:37:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Changzhong X-Patchwork-Id: 1366838 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BtBgV0Tdqz9sT6 for ; Fri, 18 Sep 2020 21:39:02 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726376AbgIRLi7 (ORCPT ); Fri, 18 Sep 2020 07:38:59 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:13302 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725882AbgIRLi6 (ORCPT ); Fri, 18 Sep 2020 07:38:58 -0400 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id AAED4BEDE1250E39538D; Fri, 18 Sep 2020 19:38:56 +0800 (CST) Received: from localhost.localdomain (10.175.112.70) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server (TLS) id 14.3.487.0; Fri, 18 Sep 2020 19:38:54 +0800 From: Zhang Changzhong To: , , CC: , Subject: [PATCH net-next] net: brcmfmac: check return value of driver_for_each_device() Date: Fri, 18 Sep 2020 19:37:48 +0800 Message-ID: <1600429068-28003-1-git-send-email-zhangchangzhong@huawei.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-Originating-IP: [10.175.112.70] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Fixes the following W=1 kernel build warning(s): drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c:1576:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 1576 | int ret; | ^~~ driver_for_each_device() has been declared with __must_check, so the return value should be checked. Signed-off-by: Zhang Changzhong --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c index ac54638..6f67fef 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c @@ -1578,6 +1578,9 @@ void brcmf_usb_exit(void) brcmf_dbg(USB, "Enter\n"); ret = driver_for_each_device(drv, NULL, NULL, brcmf_usb_reset_device); + if (ret) + brcmf_err("failed to reset all usb devices %d\n", ret); + usb_deregister(&brcmf_usbdrvr); }