From patchwork Mon Nov 8 10:11:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Borislav Petkov X-Patchwork-Id: 12608137 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 9EC47C43217 for ; Mon, 8 Nov 2021 10:12:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 872D8610F8 for ; Mon, 8 Nov 2021 10:12:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237805AbhKHKPC (ORCPT ); Mon, 8 Nov 2021 05:15:02 -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 S237761AbhKHKPA (ORCPT ); Mon, 8 Nov 2021 05:15:00 -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 5951B1EC04EE; Mon, 8 Nov 2021 11:12:15 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1636366335; 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=5VjFGofRpfW/M3GJSnJSs8mCf9EpIZn8Ox7wnRL5gBs=; b=FdHeGQk9yAoS+fFUllEcBXQ5Tz4h9+saH7MAvBFyDjO0UA+pxqVSKyWKIVxOyu9TQpl9S8 sQxKQ3ngxNIcRHJeFuxeUn0G+qI0O1Ko4KIF63vG4XPeHkTQ0ZdAYFFlEbLxxkD5M3Q370 ETTEpRFK8AgwwDA2xUjxOSBbgWxC83g= From: Borislav Petkov To: LKML Cc: linux-iio@vger.kernel.org Subject: [PATCH v0 09/42] iio: proximity: cros_ec: Check notifier registration return value Date: Mon, 8 Nov 2021 11:11:24 +0100 Message-Id: <20211108101157.15189-10-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 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Borislav Petkov Avoid homegrown notifier registration checks. No functional changes. Signed-off-by: Borislav Petkov Cc: linux-iio@vger.kernel.org --- drivers/iio/proximity/cros_ec_mkbp_proximity.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/proximity/cros_ec_mkbp_proximity.c b/drivers/iio/proximity/cros_ec_mkbp_proximity.c index 8213b0081713..e9536de8dd8a 100644 --- a/drivers/iio/proximity/cros_ec_mkbp_proximity.c +++ b/drivers/iio/proximity/cros_ec_mkbp_proximity.c @@ -234,7 +234,8 @@ static int cros_ec_mkbp_proximity_probe(struct platform_device *pdev) return ret; data->notifier.notifier_call = cros_ec_mkbp_proximity_notify; - blocking_notifier_chain_register(&ec->event_notifier, &data->notifier); + if (blocking_notifier_chain_register(&ec->event_notifier, &data->notifier)) + pr_warn("cros-ec proximity notifier already registered\n"); return 0; }