Add PINCTRL_GROUP_DESC() macro for inline use.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pinctrl/core.c | 5 +----
 drivers/pinctrl/core.h | 9 +++++++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 6380e1fa6509..75f2689c3bad 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -658,10 +658,7 @@ int pinctrl_generic_add_group(struct pinctrl_dev *pctldev, const char *name,
 	if (!group)
 		return -ENOMEM;
 
-	group->name = name;
-	group->pins = pins;
-	group->num_pins = num_pins;
-	group->data = data;
+	*group = PINCTRL_GROUP_DESC(name, pins, num_pins, data);
 
 	error = radix_tree_insert(&pctldev->pin_group_tree, selector, group);
 	if (error)
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h
index 8ef4b536bca5..bf971e6a7846 100644
--- a/drivers/pinctrl/core.h
+++ b/drivers/pinctrl/core.h
@@ -208,6 +208,15 @@ struct group_desc {
 	void *data;
 };
 
+/* Convenience macro to define a generic pin group descriptor */
+#define PINCTRL_GROUP_DESC(_name, _pins, _num_pins, _data)	\
+(struct group_desc) {						\
+	.name = _name,						\
+	.pins = _pins,						\
+	.num_pins = _num_pins,					\
+	.data = _data,						\
+}
+
 int pinctrl_generic_get_group_count(struct pinctrl_dev *pctldev);
 
 const char *pinctrl_generic_get_group_name(struct pinctrl_dev *pctldev,
-- 
2.43.0.rc1.1.gbec44491f096