mxs_lradc.is_divided was an unsigned long array. Convert it to a bitmap to save
some memory.
Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
---
drivers/staging/iio/adc/mxs-lradc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index a58c6aaa94d3..df71669bb60e 100644
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -211,7 +211,7 @@ struct mxs_lradc {
const uint32_t *vref_mv;
struct mxs_lradc_scale scale_avail[LRADC_MAX_TOTAL_CHANS][2];
- unsigned int is_divided[LRADC_MAX_TOTAL_CHANS];
+ unsigned long is_divided;
/*
* Touchscreen LRADC channels receives a private slot in the CTRL4
@@ -920,7 +920,7 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
*val = lradc->vref_mv[chan->channel];
*val2 = chan->scan_type.realbits -
- lradc->is_divided[chan->channel];
+ test_bit(chan->channel, &lradc->is_divided);
return IIO_VAL_FRACTIONAL_LOG2;
case IIO_CHAN_INFO_OFFSET:
@@ -965,14 +965,14 @@ static int mxs_lradc_write_raw(struct iio_dev *iio_dev,
/* divider by two disabled */
writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET,
lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_CLR);
- lradc->is_divided[chan->channel] = 0;
+ clear_bit(chan->channel, &lradc->is_divided);
ret = 0;
} else if (val == scale_avail[MXS_LRADC_DIV_ENABLED].integer &&
val2 == scale_avail[MXS_LRADC_DIV_ENABLED].nano) {
/* divider by two enabled */
writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET,
lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_SET);
- lradc->is_divided[chan->channel] = 1;
+ set_bit(chan->channel, &lradc->is_divided);
ret = 0;
}
--
1.8.3.2
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