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 D8014C2D0C4 for ; Tue, 10 Dec 2019 22:30:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD688207FF for ; Tue, 10 Dec 2019 22:30:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576017044; bh=abgahavQ5SwoxyCcLIir3wWNWk56AQB8IQ+J/HqMmSY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=oUMn361gYOC2RpWJf6czP2gPtY9G0X/LFvSE/8a9/45eKrW8sfFPNgEe7/eaWLcLh /ihm2xnEGMqSVT20xTtQr561LQRKEiQkcpMnOG5hdg8pzoa8acVkwXjykzzKp6Mf5M whjNbM/6GGaCNSuYJwpBfLcihkp6X719cA7MpOf0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727131AbfLJWao (ORCPT ); Tue, 10 Dec 2019 17:30:44 -0500 Received: from mail.kernel.org ([198.145.29.99]:50386 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726847AbfLJWam (ORCPT ); Tue, 10 Dec 2019 17:30:42 -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 8E0B4207FF; Tue, 10 Dec 2019 22:30:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576017041; bh=abgahavQ5SwoxyCcLIir3wWNWk56AQB8IQ+J/HqMmSY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LB8cLeQ49ib8DfzlCsWgf7+74wdETl4klr2tIfWwRe/X6Cx9au7Jqm/xcacGXXy17 5/Wt64/OcFiurAW2WuZMytUkx0VXVNvUv2S3fiyHHA7d1DDVUEAsz4b08cxDKZ606R 6PMq8G1CBaRzFH6FUXFE2Yn5Hee3GcLNHjM/OTPo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alexandru Ardelean , Jonathan Cameron , Sasha Levin , linux-iio@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 04/91] iio: tcs3414: fix iio_triggered_buffer_{pre,post}enable positions Date: Tue, 10 Dec 2019 17:29:08 -0500 Message-Id: <20191210223035.14270-4-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191210223035.14270-1-sashal@kernel.org> References: <20191210223035.14270-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexandru Ardelean [ Upstream commit 0fe2f2b789190661df24bb8bf62294145729a1fe ] The iio_triggered_buffer_{predisable,postenable} functions attach/detach the poll functions. For the predisable hook, the disable code should occur before detaching the poll func, and for the postenable hook, the poll func should be attached before the enable code. The driver was slightly reworked. The preenable hook was moved to the postenable, to add some symmetry to the postenable/predisable part. Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/light/tcs3414.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c index a795afb7667bd..b5a35c7b6b7f4 100644 --- a/drivers/iio/light/tcs3414.c +++ b/drivers/iio/light/tcs3414.c @@ -244,32 +244,42 @@ static const struct iio_info tcs3414_info = { .driver_module = THIS_MODULE, }; -static int tcs3414_buffer_preenable(struct iio_dev *indio_dev) +static int tcs3414_buffer_postenable(struct iio_dev *indio_dev) { struct tcs3414_data *data = iio_priv(indio_dev); + int ret; + + ret = iio_triggered_buffer_postenable(indio_dev); + if (ret) + return ret; data->control |= TCS3414_CONTROL_ADC_EN; - return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL, + ret = i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL, data->control); + if (ret) + iio_triggered_buffer_predisable(indio_dev); + + return ret; } static int tcs3414_buffer_predisable(struct iio_dev *indio_dev) { struct tcs3414_data *data = iio_priv(indio_dev); - int ret; - - ret = iio_triggered_buffer_predisable(indio_dev); - if (ret < 0) - return ret; + int ret, ret2; data->control &= ~TCS3414_CONTROL_ADC_EN; - return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL, + ret = i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL, data->control); + + ret2 = iio_triggered_buffer_predisable(indio_dev); + if (!ret) + ret = ret2; + + return ret; } static const struct iio_buffer_setup_ops tcs3414_buffer_setup_ops = { - .preenable = tcs3414_buffer_preenable, - .postenable = &iio_triggered_buffer_postenable, + .postenable = tcs3414_buffer_postenable, .predisable = tcs3414_buffer_predisable, }; -- 2.20.1