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[23.128.96.18]) by mx.google.com with ESMTP id v26si3028616edt.332.2021.02.18.02.00.57; Thu, 18 Feb 2021 02:01:21 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@konsulko.com header.s=google header.b=Qp9I4NGZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232107AbhBRJda (ORCPT + 99 others); Thu, 18 Feb 2021 04:33:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231228AbhBRIXb (ORCPT ); Thu, 18 Feb 2021 03:23:31 -0500 Received: from mail-io1-xd2c.google.com (mail-io1-xd2c.google.com [IPv6:2607:f8b0:4864:20::d2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A2C7C06178A for ; Thu, 18 Feb 2021 00:22:50 -0800 (PST) Received: by mail-io1-xd2c.google.com with SMTP id f6so1122361iop.11 for ; Thu, 18 Feb 2021 00:22:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=konsulko.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=rnKjQrIP8MfheJaj6JYKxcpdeoToQOxtIV47CY9Soyc=; b=Qp9I4NGZVdSnpYehuOS37dP1MRkmmpu/c3yia64CQ1aajzB2EnWcgOVMuKQewHnOAV 3YcmHtCPucGLSEpAT8DVmNY5wNBmCBT5HVHjNlcWkRfdvZXvXGw3Yv+j0iyyb+ejp34i Xxms2gdq6k4gvCOyx9VJBk4FRsa3raYKNGrM4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=rnKjQrIP8MfheJaj6JYKxcpdeoToQOxtIV47CY9Soyc=; b=HWyTw2bqfI0hoZOjZWo7wsx27hO/REo4LzlkIBXR/Rdv2mH46Br0PHw1I21gITeROG QZMFlzX/r5j6j+TM7ilaTGd0mQhMnPomr7J8s8/HkeHc+T9Mh8UObEbpJRker63Pl9Mj qvVNFmdboWBa5a/4nBooetrQBAhXX117VPNosstEl8bL0LY7gKNAUBdVbFJlnm5zqh/9 /eRMCw3niH5xU7cnUkcBmqrXsMH+qPnLsc7SpbKM1QK2VYiQP3DTlfYKJHdyJ5voqpgc na3d9d8C+T0qrcAsodfHZC9UHZ2OKrXxJyPmaXVQON1wPiKilSjGhXf95twDMIbzXh3W EasQ== X-Gm-Message-State: AOAM531Kxhr/oh6JILBuiJf75BQGa8S5v9aMW4i+2moZMzrXIuzAZVAx q8Sf8Q2j19QaIOuTlDNaiBydN8LRARdThLzeLcshcA== X-Received: by 2002:a5d:93c2:: with SMTP id j2mr2733001ioo.166.1613636569641; Thu, 18 Feb 2021 00:22:49 -0800 (PST) MIME-Version: 1.0 References: <20210215104043.91251-1-alexandru.ardelean@analog.com> <20210215104043.91251-4-alexandru.ardelean@analog.com> <20210215121119.2a047f99@archlinux> In-Reply-To: From: Matt Ranostay Date: Thu, 18 Feb 2021 00:22:38 -0800 Message-ID: Subject: Re: [PATCH v6 03/24] iio: make use of devm_iio_kfifo_buffer_setup() helper To: Gwendal Grignou Cc: Jonathan Cameron , Alexandru Ardelean , linux-kernel , linux-iio , Lars-Peter Clausen , Michael Hennerich , nuno.sa@analog.com, dragos.bogdan@analog.com, Lorenzo Bianconi , Jean-Baptiste Maneyrol , Enric Balletbo i Serra Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 16, 2021 at 3:46 PM Gwendal Grignou wrote: > > Reviewed-by: Gwendal Grignou Looks fine to me as well. Reviewed-by: Matt Ranostay > > On Mon, Feb 15, 2021 at 4:11 AM Jonathan Cameron wrote: > > > > On Mon, 15 Feb 2021 12:40:22 +0200 > > Alexandru Ardelean wrote: > > > > > All drivers that already call devm_iio_kfifo_allocate() & > > > iio_device_attach_buffer() are simple to convert to > > > iio_device_attach_kfifo_buffer() in a single go. > > > > > > This change does that; the unwind order is preserved. > > > What is important, is that the devm_iio_kfifo_buffer_setup() be called > > > after the indio_dev->modes is assigned, to make sure that > > > INDIO_BUFFER_SOFTWARE flag is set and not overridden by the assignment to > > > indio_dev->modes. > > > > > > Also, the INDIO_BUFFER_SOFTWARE has been removed from the assignments of > > > 'indio_dev->modes' because it is set by devm_iio_kfifo_buffer_setup(). > > > > > > Signed-off-by: Alexandru Ardelean > > I 'think' this one is is in the obviously correct category so I've > > applied it to the togreg branch of iio.git and pushed out as testing. > > Note there is still plenty of time for any additional feedback, > > particularly as the CC list was a little sparse. > > > > I've +CCd those who I know are still active maintainers of some > > of the affected drivers. > > > > Jonathan > > > > > --- > > > drivers/iio/accel/ssp_accel_sensor.c | 14 ++++------- > > > drivers/iio/adc/ina2xx-adc.c | 14 +++++------ > > > drivers/iio/adc/ti_am335x_adc.c | 18 ++++----------- > > > .../cros_ec_sensors/cros_ec_sensors_core.c | 13 ++++------- > > > drivers/iio/gyro/ssp_gyro_sensor.c | 14 ++++------- > > > drivers/iio/health/max30100.c | 16 ++++++------- > > > drivers/iio/health/max30102.c | 16 ++++++------- > > > .../iio/imu/inv_icm42600/inv_icm42600_accel.c | 14 +++++------ > > > .../iio/imu/inv_icm42600/inv_icm42600_gyro.c | 13 +++++------ > > > .../iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c | 15 +++++------- > > > drivers/iio/light/acpi-als.c | 12 ++++------ > > > drivers/iio/light/apds9960.c | 16 ++++++------- > > > .../staging/iio/impedance-analyzer/ad5933.c | 23 ++++--------------- > > > 13 files changed, 74 insertions(+), 124 deletions(-) > > > > > > diff --git a/drivers/iio/accel/ssp_accel_sensor.c b/drivers/iio/accel/ssp_accel_sensor.c > > > index 474477e91b5e..04dcb2b657ee 100644 > > > --- a/drivers/iio/accel/ssp_accel_sensor.c > > > +++ b/drivers/iio/accel/ssp_accel_sensor.c > > > @@ -96,7 +96,6 @@ static int ssp_accel_probe(struct platform_device *pdev) > > > int ret; > > > struct iio_dev *indio_dev; > > > struct ssp_sensor_data *spd; > > > - struct iio_buffer *buffer; > > > > > > indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*spd)); > > > if (!indio_dev) > > > @@ -109,18 +108,15 @@ static int ssp_accel_probe(struct platform_device *pdev) > > > > > > indio_dev->name = ssp_accel_device_name; > > > indio_dev->info = &ssp_accel_iio_info; > > > - indio_dev->modes = INDIO_BUFFER_SOFTWARE; > > > indio_dev->channels = ssp_acc_channels; > > > indio_dev->num_channels = ARRAY_SIZE(ssp_acc_channels); > > > indio_dev->available_scan_masks = ssp_accel_scan_mask; > > > > > > - buffer = devm_iio_kfifo_allocate(&pdev->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > - indio_dev->setup_ops = &ssp_accel_buffer_ops; > > > + ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &ssp_accel_buffer_ops); > > > + if (ret) > > > + return ret; > > > > > > platform_set_drvdata(pdev, indio_dev); > > > > > > diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c > > > index b573ec60a8b8..2ae54258b221 100644 > > > --- a/drivers/iio/adc/ina2xx-adc.c > > > +++ b/drivers/iio/adc/ina2xx-adc.c > > > @@ -953,7 +953,6 @@ static int ina2xx_probe(struct i2c_client *client, > > > { > > > struct ina2xx_chip_info *chip; > > > struct iio_dev *indio_dev; > > > - struct iio_buffer *buffer; > > > unsigned int val; > > > enum ina2xx_ids type; > > > int ret; > > > @@ -1017,7 +1016,7 @@ static int ina2xx_probe(struct i2c_client *client, > > > return ret; > > > } > > > > > > - indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE; > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > if (id->driver_data == ina226) { > > > indio_dev->channels = ina226_channels; > > > indio_dev->num_channels = ARRAY_SIZE(ina226_channels); > > > @@ -1028,13 +1027,12 @@ static int ina2xx_probe(struct i2c_client *client, > > > indio_dev->info = &ina219_info; > > > } > > > indio_dev->name = id->name; > > > - indio_dev->setup_ops = &ina2xx_setup_ops; > > > > > > - buffer = devm_iio_kfifo_allocate(&indio_dev->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > + ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &ina2xx_setup_ops); > > > + if (ret) > > > + return ret; > > > > > > return iio_device_register(indio_dev); > > > } > > > diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c > > > index e946903b0993..855cc2d64ac8 100644 > > > --- a/drivers/iio/adc/ti_am335x_adc.c > > > +++ b/drivers/iio/adc/ti_am335x_adc.c > > > @@ -385,24 +385,16 @@ static int tiadc_iio_buffered_hardware_setup(struct device *dev, > > > unsigned long flags, > > > const struct iio_buffer_setup_ops *setup_ops) > > > { > > > - struct iio_buffer *buffer; > > > int ret; > > > > > > - buffer = devm_iio_kfifo_allocate(dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > - ret = devm_request_threaded_irq(dev, irq, pollfunc_th, pollfunc_bh, > > > - flags, indio_dev->name, indio_dev); > > > + ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + setup_ops); > > > if (ret) > > > return ret; > > > > > > - indio_dev->setup_ops = setup_ops; > > > - indio_dev->modes |= INDIO_BUFFER_SOFTWARE; > > > - > > > - return 0; > > > + return devm_request_threaded_irq(dev, irq, pollfunc_th, pollfunc_bh, > > > + flags, indio_dev->name, indio_dev); > > > } > > > > > > static const char * const chan_name_ain[] = { > > > diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c > > > index c833ec0ef214..f8824afe595e 100644 > > > --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c > > > +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c > > > @@ -334,14 +334,11 @@ int cros_ec_sensors_core_init(struct platform_device *pdev, > > > * We can not use trigger here, as events are generated > > > * as soon as sample_frequency is set. > > > */ > > > - struct iio_buffer *buffer; > > > - > > > - buffer = devm_iio_kfifo_allocate(dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - indio_dev->modes = INDIO_BUFFER_SOFTWARE; > > > + ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + NULL); > > > + if (ret) > > > + return ret; > > > > > > ret = cros_ec_sensorhub_register_push_data( > > > sensor_hub, sensor_platform->sensor_num, > > > diff --git a/drivers/iio/gyro/ssp_gyro_sensor.c b/drivers/iio/gyro/ssp_gyro_sensor.c > > > index ac7c170a20de..46ed12771d2f 100644 > > > --- a/drivers/iio/gyro/ssp_gyro_sensor.c > > > +++ b/drivers/iio/gyro/ssp_gyro_sensor.c > > > @@ -96,7 +96,6 @@ static int ssp_gyro_probe(struct platform_device *pdev) > > > int ret; > > > struct iio_dev *indio_dev; > > > struct ssp_sensor_data *spd; > > > - struct iio_buffer *buffer; > > > > > > indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*spd)); > > > if (!indio_dev) > > > @@ -109,18 +108,15 @@ static int ssp_gyro_probe(struct platform_device *pdev) > > > > > > indio_dev->name = ssp_gyro_name; > > > indio_dev->info = &ssp_gyro_iio_info; > > > - indio_dev->modes = INDIO_BUFFER_SOFTWARE; > > > indio_dev->channels = ssp_gyro_channels; > > > indio_dev->num_channels = ARRAY_SIZE(ssp_gyro_channels); > > > indio_dev->available_scan_masks = ssp_gyro_scan_mask; > > > > > > - buffer = devm_iio_kfifo_allocate(&pdev->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > - indio_dev->setup_ops = &ssp_gyro_buffer_ops; > > > + ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &ssp_gyro_buffer_ops); > > > + if (ret) > > > + return ret; > > > > > > platform_set_drvdata(pdev, indio_dev); > > > > > > diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c > > > index 38aa2030f3c6..36ba7611d9ce 100644 > > > --- a/drivers/iio/health/max30100.c > > > +++ b/drivers/iio/health/max30100.c > > > @@ -418,7 +418,6 @@ static int max30100_probe(struct i2c_client *client, > > > const struct i2c_device_id *id) > > > { > > > struct max30100_data *data; > > > - struct iio_buffer *buffer; > > > struct iio_dev *indio_dev; > > > int ret; > > > > > > @@ -426,19 +425,18 @@ static int max30100_probe(struct i2c_client *client, > > > if (!indio_dev) > > > return -ENOMEM; > > > > > > - buffer = devm_iio_kfifo_allocate(&client->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > indio_dev->name = MAX30100_DRV_NAME; > > > indio_dev->channels = max30100_channels; > > > indio_dev->info = &max30100_info; > > > indio_dev->num_channels = ARRAY_SIZE(max30100_channels); > > > indio_dev->available_scan_masks = max30100_scan_masks; > > > - indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE); > > > - indio_dev->setup_ops = &max30100_buffer_setup_ops; > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > + > > > + ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &max30100_buffer_setup_ops); > > > + if (ret) > > > + return ret; > > > > > > data = iio_priv(indio_dev); > > > data->indio_dev = indio_dev; > > > diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c > > > index b35557a54ee2..2292876c55e2 100644 > > > --- a/drivers/iio/health/max30102.c > > > +++ b/drivers/iio/health/max30102.c > > > @@ -506,7 +506,6 @@ static int max30102_probe(struct i2c_client *client, > > > const struct i2c_device_id *id) > > > { > > > struct max30102_data *data; > > > - struct iio_buffer *buffer; > > > struct iio_dev *indio_dev; > > > int ret; > > > unsigned int reg; > > > @@ -515,16 +514,9 @@ static int max30102_probe(struct i2c_client *client, > > > if (!indio_dev) > > > return -ENOMEM; > > > > > > - buffer = devm_iio_kfifo_allocate(&client->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > indio_dev->name = MAX30102_DRV_NAME; > > > indio_dev->info = &max30102_info; > > > - indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE); > > > - indio_dev->setup_ops = &max30102_buffer_setup_ops; > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > > > > data = iio_priv(indio_dev); > > > data->indio_dev = indio_dev; > > > @@ -549,6 +541,12 @@ static int max30102_probe(struct i2c_client *client, > > > return -ENODEV; > > > } > > > > > > + ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &max30102_buffer_setup_ops); > > > + if (ret) > > > + return ret; > > > + > > > data->regmap = devm_regmap_init_i2c(client, &max30102_regmap_config); > > > if (IS_ERR(data->regmap)) { > > > dev_err(&client->dev, "regmap initialization failed\n"); > > > diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c > > > index 3441b0d61c5d..383cc3250342 100644 > > > --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c > > > +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c > > > @@ -709,7 +709,6 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st) > > > const char *name; > > > struct inv_icm42600_timestamp *ts; > > > struct iio_dev *indio_dev; > > > - struct iio_buffer *buffer; > > > int ret; > > > > > > name = devm_kasprintf(dev, GFP_KERNEL, "%s-accel", st->name); > > > @@ -720,23 +719,22 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st) > > > if (!indio_dev) > > > return ERR_PTR(-ENOMEM); > > > > > > - buffer = devm_iio_kfifo_allocate(dev); > > > - if (!buffer) > > > - return ERR_PTR(-ENOMEM); > > > - > > > ts = iio_priv(indio_dev); > > > inv_icm42600_timestamp_init(ts, inv_icm42600_odr_to_period(st->conf.accel.odr)); > > > > > > iio_device_set_drvdata(indio_dev, st); > > > indio_dev->name = name; > > > indio_dev->info = &inv_icm42600_accel_info; > > > - indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE; > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > indio_dev->channels = inv_icm42600_accel_channels; > > > indio_dev->num_channels = ARRAY_SIZE(inv_icm42600_accel_channels); > > > indio_dev->available_scan_masks = inv_icm42600_accel_scan_masks; > > > - indio_dev->setup_ops = &inv_icm42600_buffer_ops; > > > > > > - iio_device_attach_buffer(indio_dev, buffer); > > > + ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &inv_icm42600_buffer_ops); > > > + if (ret) > > > + return ERR_PTR(ret); > > > > > > ret = devm_iio_device_register(dev, indio_dev); > > > if (ret) > > > diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c > > > index aee7b9ff4bf4..cec1dd0e0464 100644 > > > --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c > > > +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c > > > @@ -720,7 +720,6 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st) > > > const char *name; > > > struct inv_icm42600_timestamp *ts; > > > struct iio_dev *indio_dev; > > > - struct iio_buffer *buffer; > > > int ret; > > > > > > name = devm_kasprintf(dev, GFP_KERNEL, "%s-gyro", st->name); > > > @@ -731,23 +730,23 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st) > > > if (!indio_dev) > > > return ERR_PTR(-ENOMEM); > > > > > > - buffer = devm_iio_kfifo_allocate(dev); > > > - if (!buffer) > > > - return ERR_PTR(-ENOMEM); > > > - > > > ts = iio_priv(indio_dev); > > > inv_icm42600_timestamp_init(ts, inv_icm42600_odr_to_period(st->conf.gyro.odr)); > > > > > > iio_device_set_drvdata(indio_dev, st); > > > indio_dev->name = name; > > > indio_dev->info = &inv_icm42600_gyro_info; > > > - indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE; > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > indio_dev->channels = inv_icm42600_gyro_channels; > > > indio_dev->num_channels = ARRAY_SIZE(inv_icm42600_gyro_channels); > > > indio_dev->available_scan_masks = inv_icm42600_gyro_scan_masks; > > > indio_dev->setup_ops = &inv_icm42600_buffer_ops; > > > > > > - iio_device_attach_buffer(indio_dev, buffer); > > > + ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &inv_icm42600_buffer_ops); > > > + if (ret) > > > + return ERR_PTR(ret); > > > > > > ret = devm_iio_device_register(dev, indio_dev); > > > if (ret) > > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c > > > index f1103ecedd64..16730a780964 100644 > > > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c > > > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c > > > @@ -739,20 +739,17 @@ static const struct iio_buffer_setup_ops st_lsm6dsx_buffer_ops = { > > > > > > int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw) > > > { > > > - struct iio_buffer *buffer; > > > - int i; > > > + int i, ret; > > > > > > for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { > > > if (!hw->iio_devs[i]) > > > continue; > > > > > > - buffer = devm_iio_kfifo_allocate(hw->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(hw->iio_devs[i], buffer); > > > - hw->iio_devs[i]->modes |= INDIO_BUFFER_SOFTWARE; > > > - hw->iio_devs[i]->setup_ops = &st_lsm6dsx_buffer_ops; > > > + ret = devm_iio_kfifo_buffer_setup(hw->dev, hw->iio_devs[i], > > > + INDIO_BUFFER_SOFTWARE, > > > + &st_lsm6dsx_buffer_ops); > > > + if (ret) > > > + return ret; > > > } > > > > > > return 0; > > > diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c > > > index 2be7180e2cbf..f8e547fd35e7 100644 > > > --- a/drivers/iio/light/acpi-als.c > > > +++ b/drivers/iio/light/acpi-als.c > > > @@ -165,7 +165,7 @@ static int acpi_als_add(struct acpi_device *device) > > > { > > > struct acpi_als *als; > > > struct iio_dev *indio_dev; > > > - struct iio_buffer *buffer; > > > + int ret; > > > > > > indio_dev = devm_iio_device_alloc(&device->dev, sizeof(*als)); > > > if (!indio_dev) > > > @@ -179,15 +179,13 @@ static int acpi_als_add(struct acpi_device *device) > > > > > > indio_dev->name = ACPI_ALS_DEVICE_NAME; > > > indio_dev->info = &acpi_als_info; > > > - indio_dev->modes = INDIO_BUFFER_SOFTWARE; > > > indio_dev->channels = acpi_als_channels; > > > indio_dev->num_channels = ARRAY_SIZE(acpi_als_channels); > > > > > > - buffer = devm_iio_kfifo_allocate(&device->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > + ret = devm_iio_kfifo_buffer_setup(&device->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, NULL); > > > + if (ret) > > > + return ret; > > > > > > return devm_iio_device_register(&device->dev, indio_dev); > > > } > > > diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c > > > index df0647856e5d..4141c0fa7bc4 100644 > > > --- a/drivers/iio/light/apds9960.c > > > +++ b/drivers/iio/light/apds9960.c > > > @@ -988,7 +988,6 @@ static int apds9960_probe(struct i2c_client *client, > > > const struct i2c_device_id *id) > > > { > > > struct apds9960_data *data; > > > - struct iio_buffer *buffer; > > > struct iio_dev *indio_dev; > > > int ret; > > > > > > @@ -996,19 +995,18 @@ static int apds9960_probe(struct i2c_client *client, > > > if (!indio_dev) > > > return -ENOMEM; > > > > > > - buffer = devm_iio_kfifo_allocate(&client->dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > indio_dev->info = &apds9960_info; > > > indio_dev->name = APDS9960_DRV_NAME; > > > indio_dev->channels = apds9960_channels; > > > indio_dev->num_channels = ARRAY_SIZE(apds9960_channels); > > > indio_dev->available_scan_masks = apds9960_scan_masks; > > > - indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE); > > > - indio_dev->setup_ops = &apds9960_buffer_setup_ops; > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > + > > > + ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &apds9960_buffer_setup_ops); > > > + if (ret) > > > + return ret; > > > > > > data = iio_priv(indio_dev); > > > i2c_set_clientdata(client, indio_dev); > > > diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c > > > index dba78896ea8f..793918e1c45f 100644 > > > --- a/drivers/staging/iio/impedance-analyzer/ad5933.c > > > +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c > > > @@ -602,23 +602,6 @@ static const struct iio_buffer_setup_ops ad5933_ring_setup_ops = { > > > .postdisable = ad5933_ring_postdisable, > > > }; > > > > > > -static int ad5933_register_ring_funcs_and_init(struct device *dev, > > > - struct iio_dev *indio_dev) > > > -{ > > > - struct iio_buffer *buffer; > > > - > > > - buffer = devm_iio_kfifo_allocate(dev); > > > - if (!buffer) > > > - return -ENOMEM; > > > - > > > - iio_device_attach_buffer(indio_dev, buffer); > > > - > > > - /* Ring buffer functions - here trigger setup related */ > > > - indio_dev->setup_ops = &ad5933_ring_setup_ops; > > > - > > > - return 0; > > > -} > > > - > > > static void ad5933_work(struct work_struct *work) > > > { > > > struct ad5933_state *st = container_of(work, > > > @@ -761,11 +744,13 @@ static int ad5933_probe(struct i2c_client *client, > > > > > > indio_dev->info = &ad5933_info; > > > indio_dev->name = id->name; > > > - indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE); > > > + indio_dev->modes = INDIO_DIRECT_MODE; > > > indio_dev->channels = ad5933_channels; > > > indio_dev->num_channels = ARRAY_SIZE(ad5933_channels); > > > > > > - ret = ad5933_register_ring_funcs_and_init(&client->dev, indio_dev); > > > + ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev, > > > + INDIO_BUFFER_SOFTWARE, > > > + &ad5933_ring_setup_ops); > > > if (ret) > > > return ret; > > > > >