Merge tag 'iio-fixes-for-4.4a' of ssh://ra.kernel.org/pub/scm/linux/kernel/git/jic23...

Jonathan writes:

First set of IIO fixes for the 4.4 cycle.

This set does not include those for issues introduced during the merge
window.  Fixes of those will follow in a future series.

* ad5064
  - Make sure the local i2c_write returns 0 on success rather than the
    number of bytes transfered.  Otherwise we report an error on all writes.
  - Fix a shift for ad5629 and ad5669 which gives incorrect DAC output on
    these parts.
* ad7793
  - The product ID on the datasheet is wrong.  Fix it in the driver.
* IIO_DUMMY_EVGEN
  - select IRQ_WORK as a dependency.
* lpc32xx
  - make sure clock is prepared before enabling.
* si7020
  - data byte order was reversed. Fix it.
* vf610
  - Internal temperature calculation was wrong if a different
    reference voltage was used.  Now use a linear interpolation
    function to make it work over the full range.
  - Fix a division by zero in the case of a device tree property
    not being present (same issue two fixes).
* xilinx XADC
  - VREFN scale was wrong - fix it.

diff --cc drivers/iio/adc/ad7793.c
Simple merge

diff --cc drivers/iio/adc/vf610_adc.c
Simple merge

diff --cc drivers/iio/adc/xilinx-xadc-core.c
Simple merge

diff --cc drivers/iio/dac/ad5064.c
Simple merge

diff --cc drivers/iio/humidity/si7020.c
Simple merge

diff --cc drivers/staging/iio/adc/lpc32xx_adc.c
index d11c54b721860cccb0c6db82a6d9353787560896,ef6d0b0ccf555fb1faebeb6b22744e1f3e3baf36..b51f237cd817c9dc8fe668bb61ae708577bf8287
--- 1/drivers/staging/iio/adc/lpc32xx_adc.c
--- 2/drivers/staging/iio/adc/lpc32xx_adc.c
+++ b/drivers/staging/iio/adc/lpc32xx_adc.c
@@@ -76,15 -76,15 +76,15 @@@ static int lpc32xx_read_raw(struct iio_
  
        if (mask == IIO_CHAN_INFO_RAW) {
                mutex_lock(&indio_dev->mlock);
-               clk_enable(info->clk);
+               clk_prepare_enable(info->clk);
                /* Measurement setup */
                __raw_writel(AD_INTERNAL | (chan->address) | AD_REFp | AD_REFm,
 -                      LPC32XX_ADC_SELECT(info->adc_base));
 +                           LPC32XX_ADC_SELECT(info->adc_base));
                /* Trigger conversion */
                __raw_writel(AD_PDN_CTRL | AD_STROBE,
 -                      LPC32XX_ADC_CTRL(info->adc_base));
 +                           LPC32XX_ADC_CTRL(info->adc_base));
                wait_for_completion(&info->completion); /* set by ISR */
-               clk_disable(info->clk);
+               clk_disable_unprepare(info->clk);
                *val = info->value;
                mutex_unlock(&indio_dev->mlock);