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Date: Tue, 2 Mar 2021 11:46:06 +0100
From: Enric Balletbo i Serra <enric.balletbo@...labora.com>
To: Jonathan Cameron <jic23@...nel.org>,
Alexandru Ardelean <alexandru.ardelean@...log.com>
Cc: linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
bleung@...omium.org, groeck@...omium.org, gwendal@...omium.org
Subject: Re: [PATCH 1/2] iio: cros_ec: do an early exit if not physical_device
case
Hi all,
On 21/2/21 17:29, Jonathan Cameron wrote:
> On Mon, 23 Nov 2020 16:40:16 +0200
> Alexandru Ardelean <alexandru.ardelean@...log.com> wrote:
>
>> This whole code-block was put under one big if() condition/block.
>> This change does an early return if the 'physical_device' boolean is false,
>> thus unindenting the block by one level.
>>
>> No other functional change has been done.
>>
>> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
> @Gwendal, others This series from Alex has been outstanding for a while
> but may well still apply.
> Ideally looking for an ack.
>
This looks good to me.
Acked-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Thanks,
Enric
> Thanks,
>
> Jonathan
>
>> ---
>> .../cros_ec_sensors/cros_ec_sensors_core.c | 161 +++++++++---------
>> 1 file changed, 81 insertions(+), 80 deletions(-)
>>
>> 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 5c6c4e6fec9b..9470014936f2 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
>> @@ -287,89 +287,90 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
>>
>> indio_dev->name = pdev->name;
>>
>> - if (physical_device) {
>> - state->param.cmd = MOTIONSENSE_CMD_INFO;
>> - state->param.info.sensor_num = sensor_platform->sensor_num;
>> - ret = cros_ec_motion_send_host_cmd(state, 0);
>> - if (ret) {
>> - dev_warn(dev, "Can not access sensor info\n");
>> + if (!physical_device)
>> + return 0;
>> +
>> + state->param.cmd = MOTIONSENSE_CMD_INFO;
>> + state->param.info.sensor_num = sensor_platform->sensor_num;
>> + ret = cros_ec_motion_send_host_cmd(state, 0);
>> + if (ret) {
>> + dev_warn(dev, "Can not access sensor info\n");
>> + return ret;
>> + }
>> + state->type = state->resp->info.type;
>> + state->loc = state->resp->info.location;
>> +
>> + /* Set sign vector, only used for backward compatibility. */
>> + memset(state->sign, 1, CROS_EC_SENSOR_MAX_AXIS);
>> +
>> + for (i = CROS_EC_SENSOR_X; i < CROS_EC_SENSOR_MAX_AXIS; i++)
>> + state->calib[i].scale = MOTION_SENSE_DEFAULT_SCALE;
>> +
>> + /* 0 is a correct value used to stop the device */
>> + if (state->msg->version < 3) {
>> + get_default_min_max_freq(state->resp->info.type,
>> + &frequencies[1],
>> + &frequencies[2],
>> + &state->fifo_max_event_count);
>> + } else {
>> + frequencies[1] = state->resp->info_3.min_frequency;
>> + frequencies[2] = state->resp->info_3.max_frequency;
>> + state->fifo_max_event_count =
>> + state->resp->info_3.fifo_max_event_count;
>> + }
>> + for (i = 0; i < ARRAY_SIZE(frequencies); i++) {
>> + state->frequencies[2 * i] = frequencies[i] / 1000;
>> + state->frequencies[2 * i + 1] =
>> + (frequencies[i] % 1000) * 1000;
>> + }
>> +
>> + if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) {
>> + /*
>> + * Create a software buffer, feed by the EC FIFO.
>> + * 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 = cros_ec_sensorhub_register_push_data(
>> + sensor_hub, sensor_platform->sensor_num,
>> + indio_dev, push_data);
>> + if (ret)
>> return ret;
>> - }
>> - state->type = state->resp->info.type;
>> - state->loc = state->resp->info.location;
>>
>> - /* Set sign vector, only used for backward compatibility. */
>> - memset(state->sign, 1, CROS_EC_SENSOR_MAX_AXIS);
>> + ret = devm_add_action_or_reset(
>> + dev, cros_ec_sensors_core_clean, pdev);
>> + if (ret)
>> + return ret;
>>
>> - for (i = CROS_EC_SENSOR_X; i < CROS_EC_SENSOR_MAX_AXIS; i++)
>> - state->calib[i].scale = MOTION_SENSE_DEFAULT_SCALE;
>> -
>> - /* 0 is a correct value used to stop the device */
>> - if (state->msg->version < 3) {
>> - get_default_min_max_freq(state->resp->info.type,
>> - &frequencies[1],
>> - &frequencies[2],
>> - &state->fifo_max_event_count);
>> - } else {
>> - frequencies[1] = state->resp->info_3.min_frequency;
>> - frequencies[2] = state->resp->info_3.max_frequency;
>> - state->fifo_max_event_count =
>> - state->resp->info_3.fifo_max_event_count;
>> - }
>> - for (i = 0; i < ARRAY_SIZE(frequencies); i++) {
>> - state->frequencies[2 * i] = frequencies[i] / 1000;
>> - state->frequencies[2 * i + 1] =
>> - (frequencies[i] % 1000) * 1000;
>> - }
>> -
>> - if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) {
>> - /*
>> - * Create a software buffer, feed by the EC FIFO.
>> - * 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 = cros_ec_sensorhub_register_push_data(
>> - sensor_hub, sensor_platform->sensor_num,
>> - indio_dev, push_data);
>> - if (ret)
>> - return ret;
>> -
>> - ret = devm_add_action_or_reset(
>> - dev, cros_ec_sensors_core_clean, pdev);
>> - if (ret)
>> - return ret;
>> -
>> - /* Timestamp coming from FIFO are in ns since boot. */
>> - ret = iio_device_set_clock(indio_dev, CLOCK_BOOTTIME);
>> - if (ret)
>> - return ret;
>> - } else {
>> - const struct attribute **fifo_attrs;
>> -
>> - if (has_hw_fifo)
>> - fifo_attrs = cros_ec_sensor_fifo_attributes;
>> - else
>> - fifo_attrs = NULL;
>> -
>> - /*
>> - * The only way to get samples in buffer is to set a
>> - * software trigger (systrig, hrtimer).
>> - */
>> - ret = devm_iio_triggered_buffer_setup_ext(
>> - dev, indio_dev, NULL, trigger_capture,
>> - NULL, fifo_attrs);
>> - if (ret)
>> - return ret;
>> - }
>> + /* Timestamp coming from FIFO are in ns since boot. */
>> + ret = iio_device_set_clock(indio_dev, CLOCK_BOOTTIME);
>> + if (ret)
>> + return ret;
>> + } else {
>> + const struct attribute **fifo_attrs;
>> +
>> + if (has_hw_fifo)
>> + fifo_attrs = cros_ec_sensor_fifo_attributes;
>> + else
>> + fifo_attrs = NULL;
>> +
>> + /*
>> + * The only way to get samples in buffer is to set a
>> + * software trigger (systrig, hrtimer).
>> + */
>> + ret = devm_iio_triggered_buffer_setup_ext(
>> + dev, indio_dev, NULL, trigger_capture,
>> + NULL, fifo_attrs);
>> + if (ret)
>> + return ret;
>> }
>>
>> return 0;
>
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