On 05/04/2013 02:19 PM, Michał Mirosław wrote:
> This fixes 'preenable failed: -EINVAL' error when using this driver.
>
For future patches, please cleanly separate out (in a different series)
the bug fixes from the cleanups. This one has been applied to the
fixes-togreg branch of iio.git wherease the first patch will go
through the togreg branch and hit one kernel cycle later.
Applied to the fixes-togreg
> Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
> ---
> drivers/staging/iio/adc/mxs-lradc.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
> index 03299ea..d92c97a 100644
> --- a/drivers/staging/iio/adc/mxs-lradc.c
> +++ b/drivers/staging/iio/adc/mxs-lradc.c
> @@ -690,7 +690,6 @@ static void mxs_lradc_trigger_remove(struct iio_dev *iio)
> static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
> {
> struct mxs_lradc *lradc = iio_priv(iio);
> - struct iio_buffer *buffer = iio->buffer;
> int ret = 0, chan, ofs = 0;
> unsigned long enable = 0;
> uint32_t ctrl4_set = 0;
> @@ -698,7 +697,7 @@ static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
> uint32_t ctrl1_irq = 0;
> const uint32_t chan_value = LRADC_CH_ACCUMULATE |
> ((LRADC_DELAY_TIMER_LOOP - 1) << LRADC_CH_NUM_SAMPLES_OFFSET);
> - const int len = bitmap_weight(buffer->scan_mask, LRADC_MAX_TOTAL_CHANS);
> + const int len = bitmap_weight(iio->active_scan_mask, LRADC_MAX_TOTAL_CHANS);
>
> if (!len)
> return -EINVAL;
> @@ -725,7 +724,7 @@ static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
> lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
> writel(0xff, lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
>
> - for_each_set_bit(chan, buffer->scan_mask, LRADC_MAX_TOTAL_CHANS) {
> + for_each_set_bit(chan, iio->active_scan_mask, LRADC_MAX_TOTAL_CHANS) {
> ctrl4_set |= chan << LRADC_CTRL4_LRADCSELECT_OFFSET(ofs);
> ctrl4_clr |= LRADC_CTRL4_LRADCSELECT_MASK(ofs);
> ctrl1_irq |= LRADC_CTRL1_LRADC_IRQ_EN(ofs);
>
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