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staging:iio:adc:ad7280a: Drop unused timestamp channel. 

The driver doesn't support buffered mode, so a timestamp channel that
is entirely hidden from userspace without buffer mode is rather pointless.
Drop it.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Link: https://lore.kernel.org/r/20220206190328.333093-9-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2022-02-06 19:03:16 +00:00
parent 96ccdbc07a
commit c27e1e1a24
1 changed files with 1 additions and 13 deletions
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14
drivers/staging/iio/adc/ad7280a.c
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@ -613,16 +613,6 @@ static void ad7280_total_voltage_channel_init(struct iio_chan_spec *chan,
chan->scan_type.storagebits = 32; chan->scan_type.storagebits = 32;
} }
static void ad7280_timestamp_channel_init(struct iio_chan_spec *chan, int cnt)
{
chan->type = IIO_TIMESTAMP;
chan->channel = -1;
chan->scan_index = cnt;
chan->scan_type.sign = 's';
chan->scan_type.realbits = 64;
chan->scan_type.storagebits = 64;
}
static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt) static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt)
{ {
int addr, ch, i; int addr, ch, i;
@ -650,7 +640,7 @@ static int ad7280_channel_init(struct ad7280_state *st)
{ {
int dev, cnt = 0; int dev, cnt = 0;
st->channels = devm_kcalloc(&st->spi->dev, (st->slave_num + 1) * 12 + 2, st->channels = devm_kcalloc(&st->spi->dev, (st->slave_num + 1) * 12 + 1,
sizeof(*st->channels), GFP_KERNEL); sizeof(*st->channels), GFP_KERNEL);
if (!st->channels) if (!st->channels)
return -ENOMEM; return -ENOMEM;
@ -659,8 +649,6 @@ static int ad7280_channel_init(struct ad7280_state *st)
ad7280_init_dev_channels(st, dev, &cnt); ad7280_init_dev_channels(st, dev, &cnt);
ad7280_total_voltage_channel_init(&st->channels[cnt], cnt, dev); ad7280_total_voltage_channel_init(&st->channels[cnt], cnt, dev);
cnt++;
ad7280_timestamp_channel_init(&st->channels[cnt], cnt);
return cnt + 1; return cnt + 1;
} }