Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp6343268pxb; Mon, 8 Nov 2021 07:07:57 -0800 (PST) X-Google-Smtp-Source: ABdhPJwC23T06GQXNJG7jDOHJ5JiftmlnxztvbMB5NxmMAJzqwfuDEo5PN3GhqyzZrb6EbUou5Ac X-Received: by 2002:a05:6402:5c2:: with SMTP id n2mr296411edx.239.1636384077166; Mon, 08 Nov 2021 07:07:57 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1636384077; cv=none; d=google.com; s=arc-20160816; b=fPELMql3iv8iV4YjClIHRvPLEi89k8RaOaGhN4yWoiY+n9H2SrZVjoAy+rJvml8qnA e6oQ7OgUZaOvIgHSj9W0oMz0stZDmSeUtthKC36VNaDM8ViSaSNf49QYEccNSrM656Ex H1IbXzrgCJPKxbA8s6VgTeEfmZV3AC1JKwCw4WZRroM2PTWSVdsI5thYnZhwW2Bt6fp4 QWlOytEAalohukUlxkGHzej+xkGOm68Hnttpx+1cwbNhAVGhsvnMkCGL3s+oXgsXKY5U byTNt6sO2VDwr34GQO6vlP8Qb2YZhK7pDtXEW0w19fiLdwJWletyzdWEohsm7im+4lOy tZ0A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=S25eMXn6hpdZN3Pddzt03AvMdhzZdSwpbxmvL0Bmj8g=; b=ISoYfyCRLW0KRQR4HZ3iWLtIjiiUKjtL+/BKjEaykfJ8j7Wd8Y+PA1iWQVi+m1RCVR 4+LPezkHj5s1k6Jh/FfcQ3NsrATCmjDQ00H5smkDNGo7h/tYHIm9WJSjqurnIyg8vsCz 1JkpO6SHoEUGKK1Ai5w3XbbDTvqv+ml5D4TRVcVvhooo9Riy2cs4g9nn+JN34dyvK55Z ODHTnpJPz3RhFqrKMKYry3d3Ie9W56ofhREdwZLGWxm0UoATBHgByJcqMxardxG+Em+j mk3LGSY/rJjrY89RFTe5c6F000Oociz+M5WYXX4QngN8RS45s4y73sAC8WN01QFZJV8o Y3Ig== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=lchuiTDt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id q3si24225601edi.40.2021.11.08.07.07.31; Mon, 08 Nov 2021 07:07:57 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=lchuiTDt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237446AbhKHKRM (ORCPT + 99 others); Mon, 8 Nov 2021 05:17:12 -0500 Received: from mail.skyhub.de ([5.9.137.197]:38262 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238546AbhKHKPG (ORCPT ); Mon, 8 Nov 2021 05:15:06 -0500 Received: from zn.tnic (p200300ec2f33110088892b77bd117736.dip0.t-ipconnect.de [IPv6:2003:ec:2f33:1100:8889:2b77:bd11:7736]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 00EC81EC04EE; Mon, 8 Nov 2021 11:12:20 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1636366341; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=S25eMXn6hpdZN3Pddzt03AvMdhzZdSwpbxmvL0Bmj8g=; b=lchuiTDtCzlrCJGlE1CQJhWUjXqHGyLvQaEflcOJUI21dZ4VLCUuy2RmeV1qVmriPJElqM 1wNnTWv6jnCIYEwAke74gyYPPMP0yz09fbqbN/YUaksYBpnjEk/8sME2RHdeA+JPTXosaF qit42UU3/BaGsoG1uY3oOiSV3VshLQs= From: Borislav Petkov To: LKML Cc: linux-usb@vger.kernel.org Subject: [PATCH v0 16/42] USB: Check notifier registration return value Date: Mon, 8 Nov 2021 11:11:31 +0100 Message-Id: <20211108101157.15189-17-bp@alien8.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20211108101157.15189-1-bp@alien8.de> References: <20211108101157.15189-1-bp@alien8.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov Avoid homegrown notifier registration checks. No functional changes. Signed-off-by: Borislav Petkov Cc: linux-usb@vger.kernel.org --- drivers/usb/core/notify.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c index e6143663778f..80d1bfa61887 100644 --- a/drivers/usb/core/notify.c +++ b/drivers/usb/core/notify.c @@ -28,7 +28,8 @@ static BLOCKING_NOTIFIER_HEAD(usb_notifier_list); */ void usb_register_notify(struct notifier_block *nb) { - blocking_notifier_chain_register(&usb_notifier_list, nb); + if (blocking_notifier_chain_register(&usb_notifier_list, nb)) + pr_warn("USB change notifier already registered\n"); } EXPORT_SYMBOL_GPL(usb_register_notify); -- 2.29.2