iio: adc: max1027: Fix style

Follow checkpatch.pl's main advices before hacking into the driver, mainly:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
WARNING: Prefer 'unsigned int *' to bare use of 'unsigned *'
CHECK: Comparison to NULL could be written "!foo"
CHECK: Alignment should match open parenthesis

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210921115408.66711-2-miquel.raynal@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 655ab02d03d8496bf73cabb24898ba7a1b8c37db..372f2ca96eaed8274a2b87621c1b793c324f49cf 100644 (file)
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -328,8 +328,8 @@ static int max1027_read_raw(struct iio_dev *indio_dev,
 }
 
 static int max1027_debugfs_reg_access(struct iio_dev *indio_dev,
-                                     unsigned reg, unsigned writeval,
-                                     unsigned *readval)
+                                     unsigned int reg, unsigned int writeval,
+                                     unsigned int *readval)
 {
        struct max1027_state *st = iio_priv(indio_dev);
        u8 *val = (u8 *)st->buffer;
@@ -425,7 +425,7 @@ static int max1027_probe(struct spi_device *spi)
        pr_debug("%s: probe(spi = 0x%p)\n", __func__, spi);
 
        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-       if (indio_dev == NULL) {
+       if (!indio_dev) {
                pr_err("Can't allocate iio device\n");
                return -ENOMEM;
        }
@@ -444,9 +444,9 @@ static int max1027_probe(struct spi_device *spi)
        indio_dev->available_scan_masks = st->info->available_scan_masks;
 
        st->buffer = devm_kmalloc_array(&indio_dev->dev,
-                                 indio_dev->num_channels, 2,
-                                 GFP_KERNEL);
-       if (st->buffer == NULL) {
+                                       indio_dev->num_channels, 2,
+                                       GFP_KERNEL);
+       if (!st->buffer) {
                dev_err(&indio_dev->dev, "Can't allocate buffer\n");
                return -ENOMEM;
        }
@@ -463,7 +463,7 @@ static int max1027_probe(struct spi_device *spi)
 
                st->trig = devm_iio_trigger_alloc(&spi->dev, "%s-trigger",
                                                  indio_dev->name);
-               if (st->trig == NULL) {
+               if (!st->trig) {
                        ret = -ENOMEM;
                        dev_err(&indio_dev->dev,
                                "Failed to allocate iio trigger\n");