From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 EB87EC2D0DB for ; Tue, 28 Jan 2020 14:10:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4DE82469A for ; Tue, 28 Jan 2020 14:10:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580220659; bh=gr0D0KLmZFO7zQqMwxvQRyhMjaVrmIB1oPKcFDZje1E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=F6VjcfbQ0YN4cXWMsVbhczIOo0dykLPuGCY2FeIod99ynYiM2ym/h9BJTx18CZpYJ 23v+57FESMsUKzUMMlCDkgyA+5G+JNRnD4x4jQKetE/dvMt/0M9IYsxRLNlOGNEiFZ LWWYzjSG5ck3Jp7fpRPu3O3/U2mNMhHThNpnNKe0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728539AbgA1OK7 (ORCPT ); Tue, 28 Jan 2020 09:10:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:59886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729224AbgA1OKz (ORCPT ); Tue, 28 Jan 2020 09:10:55 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 15AAF2468F; Tue, 28 Jan 2020 14:10:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580220654; bh=gr0D0KLmZFO7zQqMwxvQRyhMjaVrmIB1oPKcFDZje1E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ApJCN6/ckNdEdjfMV8G6J9bpAUOxBykNA3UHNMC/53Vu6oCRqRRHrhYPSBphRX3vM +0HzYZZP+rhQQTXGTIlACL/1OJjzi6xu4MoJ1UMdTNKFjsgMbdGG5AaaDvhJ8RBbaG V79QLjKslTyGSPjL0J7iYIfZ7SMLYrXV2igRqUKk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Brian Masney , Pavel Machek , Daniel Thompson , Lee Jones , Sasha Levin Subject: [PATCH 4.4 093/183] backlight: lm3630a: Return 0 on success in update_status functions Date: Tue, 28 Jan 2020 15:05:12 +0100 Message-Id: <20200128135839.396929200@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200128135829.486060649@linuxfoundation.org> References: <20200128135829.486060649@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Brian Masney [ Upstream commit d3f48ec0954c6aac736ab21c34a35d7554409112 ] lm3630a_bank_a_update_status() and lm3630a_bank_b_update_status() both return the brightness value if the brightness was successfully updated. Writing to these attributes via sysfs would cause a 'Bad address' error to be returned. These functions should return 0 on success, so let's change it to correct that error. Fixes: 28e64a68a2ef ("backlight: lm3630: apply chip revision") Signed-off-by: Brian Masney Acked-by: Pavel Machek Acked-by: Daniel Thompson Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/video/backlight/lm3630a_bl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c index 35fe4825a4546..5ef6f9d420a23 100644 --- a/drivers/video/backlight/lm3630a_bl.c +++ b/drivers/video/backlight/lm3630a_bl.c @@ -200,7 +200,7 @@ static int lm3630a_bank_a_update_status(struct backlight_device *bl) LM3630A_LEDA_ENABLE, LM3630A_LEDA_ENABLE); if (ret < 0) goto out_i2c_err; - return bl->props.brightness; + return 0; out_i2c_err: dev_err(pchip->dev, "i2c failed to access\n"); @@ -277,7 +277,7 @@ static int lm3630a_bank_b_update_status(struct backlight_device *bl) LM3630A_LEDB_ENABLE, LM3630A_LEDB_ENABLE); if (ret < 0) goto out_i2c_err; - return bl->props.brightness; + return 0; out_i2c_err: dev_err(pchip->dev, "i2c failed to access REG_CTRL\n"); -- 2.20.1