pinctrl: core: Make dt_free_map optional

If the pin controller driver is using devm_kzalloc, there may not be
anything to do for dt_free_map. Let's make it optional to avoid
unncessary boilerplate code.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 9f305ac..5b1ab06 100644 (file)
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -1913,9 +1913,6 @@ static int pinctrl_check_ops(struct pinctrl_dev *pctldev)
            !ops->get_group_name)
                return -EINVAL;
 
-       if (ops->dt_node_to_map && !ops->dt_free_map)
-               return -EINVAL;
-
        return 0;
 }
 

diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c
index e082bdd..0e5c9f1 100644 (file)
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -42,7 +42,8 @@ static void dt_free_map(struct pinctrl_dev *pctldev,
 {
        if (pctldev) {
                const struct pinctrl_ops *ops = pctldev->desc->pctlops;
-               ops->dt_free_map(pctldev, map, num_maps);
+               if (ops->dt_free_map)
+                       ops->dt_free_map(pctldev, map, num_maps);
        } else {
                /* There is no pctldev for PIN_MAP_TYPE_DUMMY_STATE */
                kfree(map);