Re: [PATCH v2 03/11] staging: iio: tsl2x7x: don't setup event handlers if interrupts are not configured

Jonathan Cameron
2018-05-06T18:07:46Z

On Thu, 3 May 2018 22:53:11 -0400
Brian Masney <masneyb@onstation.org> wrote:

> The driver would expose to userspace the events directory even if the
> interrupts were not configured. This patch changes the driver so that
> the events directory is not exposed to user space if interrupts are
> not configured. This patch also corrects the indentation of the
> chan_table_elements and info structure members.
>
> Signed-off-by: Brian Masney <masneyb@onstation.org>
Applied

Thanks,

Jonathan

> ---
> drivers/staging/iio/light/tsl2x7x.c | 130 +++++++++++++++++++++++++++++++-----
> 1 file changed, 112 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
> index b4d77f65ca12..7e8db5178a2c 100644
> --- a/drivers/staging/iio/light/tsl2x7x.c
> +++ b/drivers/staging/iio/light/tsl2x7x.c
> @@ -134,8 +134,9 @@ struct tsl2x7x_als_info {
>
> struct tsl2x7x_chip_info {
> int chan_table_elements;
> - struct iio_chan_spec channel[4];
> - const struct iio_info *info;
> + struct iio_chan_spec channel_with_events[4];
> + struct iio_chan_spec channel_without_events[4];
> + const struct iio_info *info;
> };
>
> struct tsl2X7X_chip {
> @@ -1447,7 +1448,7 @@ static const struct iio_event_spec tsl2x7x_events[] = {
>
> static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
> [ALS] = {
> - .channel = {
> + .channel_with_events = {
> {
> .type = IIO_LIGHT,
> .indexed = 1,
> @@ -1469,11 +1470,31 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
> .channel = 1,
> },
> },
> - .chan_table_elements = 3,
> - .info = &tsl2X7X_device_info[ALS],
> + .channel_without_events = {
> + {
> + .type = IIO_LIGHT,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
> + }, {
> + .type = IIO_INTENSITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
> + BIT(IIO_CHAN_INFO_INT_TIME) |
> + BIT(IIO_CHAN_INFO_CALIBSCALE) |
> + BIT(IIO_CHAN_INFO_CALIBBIAS),
> + }, {
> + .type = IIO_INTENSITY,
> + .indexed = 1,
> + .channel = 1,
> + },
> + },
> + .chan_table_elements = 3,
> + .info = &tsl2X7X_device_info[ALS],
> },
> [PRX] = {
> - .channel = {
> + .channel_with_events = {
> {
> .type = IIO_PROXIMITY,
> .indexed = 1,
> @@ -1483,11 +1504,19 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
> .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
> },
> },
> - .chan_table_elements = 1,
> - .info = &tsl2X7X_device_info[PRX],
> + .channel_without_events = {
> + {
> + .type = IIO_PROXIMITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> + },
> + },
> + .chan_table_elements = 1,
> + .info = &tsl2X7X_device_info[PRX],
> },
> [ALSPRX] = {
> - .channel = {
> + .channel_with_events = {
> {
> .type = IIO_LIGHT,
> .indexed = 1,
> @@ -1517,11 +1546,37 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
> .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
> },
> },
> - .chan_table_elements = 4,
> - .info = &tsl2X7X_device_info[ALSPRX],
> + .channel_without_events = {
> + {
> + .type = IIO_LIGHT,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
> + }, {
> + .type = IIO_INTENSITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
> + BIT(IIO_CHAN_INFO_INT_TIME) |
> + BIT(IIO_CHAN_INFO_CALIBSCALE) |
> + BIT(IIO_CHAN_INFO_CALIBBIAS),
> + }, {
> + .type = IIO_INTENSITY,
> + .indexed = 1,
> + .channel = 1,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> + }, {
> + .type = IIO_PROXIMITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> + },
> + },
> + .chan_table_elements = 4,
> + .info = &tsl2X7X_device_info[ALSPRX],
> },
> [PRX2] = {
> - .channel = {
> + .channel_with_events = {
> {
> .type = IIO_PROXIMITY,
> .indexed = 1,
> @@ -1532,11 +1587,20 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
> .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
> },
> },
> - .chan_table_elements = 1,
> - .info = &tsl2X7X_device_info[PRX2],
> + .channel_without_events = {
> + {
> + .type = IIO_PROXIMITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
> + BIT(IIO_CHAN_INFO_CALIBSCALE),
> + },
> + },
> + .chan_table_elements = 1,
> + .info = &tsl2X7X_device_info[PRX2],
> },
> [ALSPRX2] = {
> - .channel = {
> + .channel_with_events = {
> {
> .type = IIO_LIGHT,
> .indexed = 1,
> @@ -1567,8 +1631,35 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
> .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
> },
> },
> - .chan_table_elements = 4,
> - .info = &tsl2X7X_device_info[ALSPRX2],
> + .channel_without_events = {
> + {
> + .type = IIO_LIGHT,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
> + }, {
> + .type = IIO_INTENSITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
> + BIT(IIO_CHAN_INFO_INT_TIME) |
> + BIT(IIO_CHAN_INFO_CALIBSCALE) |
> + BIT(IIO_CHAN_INFO_CALIBBIAS),
> + }, {
> + .type = IIO_INTENSITY,
> + .indexed = 1,
> + .channel = 1,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> + }, {
> + .type = IIO_PROXIMITY,
> + .indexed = 1,
> + .channel = 0,
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
> + BIT(IIO_CHAN_INFO_CALIBSCALE),
> + },
> + },
> + .chan_table_elements = 4,
> + .info = &tsl2X7X_device_info[ALSPRX2],
> },
> };
>
> @@ -1620,10 +1711,11 @@ static int tsl2x7x_probe(struct i2c_client *clientp,
> indio_dev->dev.parent = &clientp->dev;
> indio_dev->modes = INDIO_DIRECT_MODE;
> indio_dev->name = chip->client->name;
> - indio_dev->channels = chip->chip_info->channel;
> indio_dev->num_channels = chip->chip_info->chan_table_elements;
>
> if (clientp->irq) {
> + indio_dev->channels = chip->chip_info->channel_with_events;
> +
> ret = devm_request_threaded_irq(&clientp->dev, clientp->irq,
> NULL,
> &tsl2x7x_event_handler,
> @@ -1636,6 +1728,8 @@ static int tsl2x7x_probe(struct i2c_client *clientp,
> "%s: irq request failed\n", __func__);
> return ret;
> }
> + } else {
> + indio_dev->channels = chip->chip_info->channel_without_events;
> }
>
> tsl2x7x_defaults(chip);