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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 8068AC33CAF for ; Thu, 16 Jan 2020 17:53:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 592422077C for ; Thu, 16 Jan 2020 17:53:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579197218; bh=UV+UW21C0YLEnMbawAaEXJVN1QaXt/38CSxDdq3QTno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=iAH6C//C0p/07UNLNry9bWNAQo34SyK8RbzQZDZa9FL7AFYtFZNE0FHBq4lISft2S 7XnGmOqyKb7YWlFK8SeKe9+t/Qc4oissYSPbp+SX0I3mb2Hqp6To6wR6mHGp2+Opw9 XGYakuU5FBSkmeFR8RGpf51BkBiY+8kwXU3Fkn3o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730161AbgAPRxe (ORCPT ); Thu, 16 Jan 2020 12:53:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:36368 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406036AbgAPRpA (ORCPT ); Thu, 16 Jan 2020 12:45:00 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2EC4F2477C; Thu, 16 Jan 2020 17:44:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579196699; bh=UV+UW21C0YLEnMbawAaEXJVN1QaXt/38CSxDdq3QTno=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GEpywa7uKQkIKbFnbjVj+P9B9w5mXDYUnCauv+xSSL55Jei0ncovnQyfqrcX0wtx/ c5VZRPFtnwxY1eGSZNCpbBnrzDVFeC9NGIYX3v48FrHVzQ63rn6fkcJpOX2fLX91WL lZCEkN/E+lnS5T6g50xqtvxRg2NMrSDkfwotUtIQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Brian Masney , Pavel Machek , Daniel Thompson , Lee Jones , Sasha Levin , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 092/174] backlight: lm3630a: Return 0 on success in update_status functions Date: Thu, 16 Jan 2020 12:41:29 -0500 Message-Id: <20200116174251.24326-92-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116174251.24326-1-sashal@kernel.org> References: <20200116174251.24326-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@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 35fe4825a454..5ef6f9d420a2 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