From patchwork Wed Aug 26 06:40:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 11737395 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EF5D114E5 for ; Wed, 26 Aug 2020 06:40:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DBA41207DF for ; Wed, 26 Aug 2020 06:40:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726202AbgHZGkj (ORCPT ); Wed, 26 Aug 2020 02:40:39 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:10748 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726039AbgHZGkj (ORCPT ); Wed, 26 Aug 2020 02:40:39 -0400 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 07Q6WGMF020652; Wed, 26 Aug 2020 02:40:38 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com with ESMTP id 3330954eya-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 Aug 2020 02:40:38 -0400 Received: from SCSQMBX10.ad.analog.com (scsqmbx10.ad.analog.com [10.77.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 07Q6ea6p015258 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Wed, 26 Aug 2020 02:40:36 -0400 Received: from SCSQCASHYB7.ad.analog.com (10.77.17.133) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Tue, 25 Aug 2020 23:40:35 -0700 Received: from SCSQMBX11.ad.analog.com (10.77.17.10) by SCSQCASHYB7.ad.analog.com (10.77.17.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Tue, 25 Aug 2020 23:40:35 -0700 Received: from zeus.spd.analog.com (10.66.68.11) by SCSQMBX11.ad.analog.com (10.77.17.10) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Tue, 25 Aug 2020 23:40:34 -0700 Received: from saturn.ad.analog.com ([10.48.65.100]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 07Q6eV7p018895; Wed, 26 Aug 2020 02:40:31 -0400 From: Alexandru Ardelean To: , CC: , , Sergiu Cuciurean , Alexandru Ardelean Subject: [PATCH] iio: dac: ti-dac7612: Replace indio_dev->mlock with own device lock Date: Wed, 26 Aug 2020 09:40:28 +0300 Message-ID: <20200826064028.51540-1-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-08-26_03:2020-08-25,2020-08-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 malwarescore=0 phishscore=0 mlxscore=0 bulkscore=0 adultscore=0 impostorscore=0 lowpriorityscore=0 priorityscore=1501 mlxlogscore=496 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008260050 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Sergiu Cuciurean As part of the general cleanup of indio_dev->mlock, this change replaces it with a local lock on the device's state structure. Signed-off-by: Sergiu Cuciurean Signed-off-by: Alexandru Ardelean --- drivers/iio/dac/ti-dac7612.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iio/dac/ti-dac7612.c b/drivers/iio/dac/ti-dac7612.c index 07c9f39d54f1..34c2aec204ef 100644 --- a/drivers/iio/dac/ti-dac7612.c +++ b/drivers/iio/dac/ti-dac7612.c @@ -21,6 +21,7 @@ struct dac7612 { struct spi_device *spi; struct gpio_desc *loaddacs; uint16_t cache[2]; + struct mutex lock; /* * DMA (thus cache coherency maintenance) requires the @@ -101,9 +102,9 @@ static int dac7612_write_raw(struct iio_dev *iio_dev, if (val == priv->cache[chan->channel]) return 0; - mutex_lock(&iio_dev->mlock); + mutex_lock(&priv->lock); ret = dac7612_cmd_single(priv, chan->channel, val); - mutex_unlock(&iio_dev->mlock); + mutex_unlock(&priv->lock); return ret; } @@ -145,6 +146,8 @@ static int dac7612_probe(struct spi_device *spi) iio_dev->num_channels = ARRAY_SIZE(priv->cache); iio_dev->name = spi_get_device_id(spi)->name; + mutex_init(&priv->lock); + for (i = 0; i < ARRAY_SIZE(priv->cache); i++) { ret = dac7612_cmd_single(priv, i, 0); if (ret)