device property: Add cleanup.h based fwnode_handle_put() scope based cleanup.

Useful where the fwnode_handle was obtained from a call such as
fwnode_find_reference() as it will safely do nothing if IS_ERR() is true
and will automatically release the reference on the variable leaving
scope.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20240217164249.921878-3-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/include/linux/property.h b/include/linux/property.h
index 93d992a92f59e680701e72554e8a7ffc70afd7b0..1322f0cce77a02acc9006cb63bfc697c8a693f31 100644 (file)
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -13,6 +13,7 @@
 #include <linux/args.h>
 #include <linux/array_size.h>
 #include <linux/bits.h>
+#include <linux/cleanup.h>
 #include <linux/fwnode.h>
 #include <linux/stddef.h>
 #include <linux/types.h>
@@ -194,6 +195,8 @@ static inline void fwnode_handle_put(struct fwnode_handle *fwnode)
        fwnode_call_void_op(fwnode, put);
 }
 
+DEFINE_FREE(fwnode_handle, struct fwnode_handle *, fwnode_handle_put(_T))
+
 int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index);
 int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name);