staging: iio: adc: remove explicit comparison to NULL

Use !condition instead off condition == NULL when comparing with NULL

Signed-off-by: Ioana Ciornei <ciorneiioana@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
index 5ae7a50..6adac61 100644 (file)
--- a/drivers/staging/iio/adc/ad7192.c
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -626,7 +626,7 @@ static int ad7192_probe(struct spi_device *spi)
        }
 
        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-       if (indio_dev == NULL)
+       if (!indio_dev)
                return -ENOMEM;
 
        st = iio_priv(indio_dev);

diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index 6db764e..01156c7 100644 (file)
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -488,7 +488,7 @@ static int ad7280_channel_init(struct ad7280_state *st)
 
        st->channels = kcalloc((st->slave_num + 1) * 12 + 2,
                               sizeof(*st->channels), GFP_KERNEL);
-       if (st->channels == NULL)
+       if (!st->channels)
                return -ENOMEM;
 
        for (dev = 0, cnt = 0; dev <= st->slave_num; dev++)
@@ -550,7 +550,7 @@ static int ad7280_attr_init(struct ad7280_state *st)
        st->iio_attr = kcalloc(2, sizeof(*st->iio_attr) *
                               (st->slave_num + 1) * AD7280A_CELLS_PER_DEV,
                               GFP_KERNEL);
-       if (st->iio_attr == NULL)
+       if (!st->iio_attr)
                return -ENOMEM;
 
        for (dev = 0, cnt = 0; dev <= st->slave_num; dev++)
@@ -687,7 +687,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
        int i, ret;
 
        channels = kcalloc(st->scan_cnt, sizeof(*channels), GFP_KERNEL);
-       if (channels == NULL)
+       if (!channels)
                return IRQ_HANDLED;
 
        ret = ad7280_read_all_channels(st, st->scan_cnt, channels);
@@ -842,7 +842,7 @@ static int ad7280_probe(struct spi_device *spi)
        struct iio_dev *indio_dev;
 
        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-       if (indio_dev == NULL)
+       if (!indio_dev)
                return -ENOMEM;
 
        st = iio_priv(indio_dev);

diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index f250aaf..407d4a2 100644 (file)
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -1232,7 +1232,7 @@ static int mxs_lradc_trigger_init(struct iio_dev *iio)
        struct mxs_lradc *lradc = iio_priv(iio);
 
        trig = iio_trigger_alloc("%s-dev%i", iio->name, iio->id);
-       if (trig == NULL)
+       if (!trig)
                return -ENOMEM;
 
        trig->dev.parent = lradc->dev;