iio: adc: ad7292: Switch from of specific to fwnode property handling

This reduces the wrong of device tree only IIO drivers that might
be copied by converting over this simple case.
Makes use of the new _scoped() handling to automatically release
the fwnode_handle on early exit from the loop.

Cc: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240218172731.1023367-5-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad7292.c b/drivers/iio/adc/ad7292.c
index cccacec5db6d22414d818760aed8d404f99aa922..6aadd14f459dfedc9e35cad80a031b67824fe477 100644 (file)
--- a/drivers/iio/adc/ad7292.c
+++ b/drivers/iio/adc/ad7292.c
@@ -8,7 +8,8 @@
 #include <linux/bitfield.h>
 #include <linux/device.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
@@ -260,7 +261,6 @@ static int ad7292_probe(struct spi_device *spi)
 {
        struct ad7292_state *st;
        struct iio_dev *indio_dev;
-       struct device_node *child;
        bool diff_channels = false;
        int ret;
 
@@ -305,12 +305,11 @@ static int ad7292_probe(struct spi_device *spi)
        indio_dev->modes = INDIO_DIRECT_MODE;
        indio_dev->info = &ad7292_info;
 
-       for_each_available_child_of_node(spi->dev.of_node, child) {
-               diff_channels = of_property_read_bool(child, "diff-channels");
-               if (diff_channels) {
-                       of_node_put(child);
+       device_for_each_child_node_scoped(&spi->dev, child) {
+               diff_channels = fwnode_property_read_bool(child,
+                                                         "diff-channels");
+               if (diff_channels)
                        break;
-               }
        }
 
        if (diff_channels) {