staging/iio/mxs-lradc: cleanup masklength

We know the exact iio->masklength = LRADC_MAX_TOTAL_CHANS.
Let's use it consistently.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index 2856b8fd44adf808f8ca871f1960f7dec2272b93..03299eaa53cd7bfb260cc508148a8cccf8676fdf 100644 (file)
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -620,7 +620,7 @@ static irqreturn_t mxs_lradc_trigger_handler(int irq, void *p)
                ((LRADC_DELAY_TIMER_LOOP - 1) << LRADC_CH_NUM_SAMPLES_OFFSET);
        unsigned int i, j = 0;
 
-       for_each_set_bit(i, iio->active_scan_mask, iio->masklength) {
+       for_each_set_bit(i, iio->active_scan_mask, LRADC_MAX_TOTAL_CHANS) {
                lradc->buffer[j] = readl(lradc->base + LRADC_CH(j));
                writel(chan_value, lradc->base + LRADC_CH(j));
                lradc->buffer[j] &= LRADC_CH_VALUE_MASK;
@@ -775,8 +775,7 @@ static bool mxs_lradc_validate_scan_mask(struct iio_dev *iio,
                                        const unsigned long *mask)
 {
        struct mxs_lradc *lradc = iio_priv(iio);
-       const int len = iio->masklength;
-       const int map_chans = bitmap_weight(mask, len);
+       const int map_chans = bitmap_weight(mask, LRADC_MAX_TOTAL_CHANS);
        int rsvd_chans = 0;
        unsigned long rsvd_mask = 0;
 
@@ -793,7 +792,7 @@ static bool mxs_lradc_validate_scan_mask(struct iio_dev *iio,
                rsvd_chans++;
 
        /* Test for attempts to map channels with special mode of operation. */
-       if (bitmap_intersects(mask, &rsvd_mask, len))
+       if (bitmap_intersects(mask, &rsvd_mask, LRADC_MAX_TOTAL_CHANS))
                return false;
 
        /* Test for attempts to map more channels then available slots. */
@@ -969,6 +968,7 @@ static int mxs_lradc_probe(struct platform_device *pdev)
        iio->modes = INDIO_DIRECT_MODE;
        iio->channels = mxs_lradc_chan_spec;
        iio->num_channels = ARRAY_SIZE(mxs_lradc_chan_spec);
+       iio->masklength = LRADC_MAX_TOTAL_CHANS;
 
        ret = iio_triggered_buffer_setup(iio, &iio_pollfunc_store_time,
                                &mxs_lradc_trigger_handler,