[PATCH 4/6] pinctrl: rockchip: do not set gpio if bank invalid

[Jianqun Xu]

Add valid check for gpio bank.

Change-Id: Ib03e2910a7316bd61df18236151e371c4d04077a
Signed-off-by: Jianqun Xu <jay...@rock-chips.com>
---
 drivers/pinctrl/pinctrl-rockchip.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c 
b/drivers/pinctrl/pinctrl-rockchip.c
index 265d64b8c4f5..6080573155f6 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -2687,6 +2687,9 @@ static int rockchip_pinconf_set(struct pinctrl_dev 
*pctldev, unsigned int pin,
                                return rc;
                        break;
                case PIN_CONFIG_OUTPUT:
+                       if (!bank->valid)
+                               return -ENOTSUPP;
+
                        rockchip_gpio_set(&bank->gpio_chip,
                                          pin - bank->pin_base, arg);
                        rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip,
@@ -2752,6 +2755,9 @@ static int rockchip_pinconf_get(struct pinctrl_dev 
*pctldev, unsigned int pin,
                arg = 1;
                break;
        case PIN_CONFIG_OUTPUT:
+               if (!bank->valid)
+                       return -ENOTSUPP;
+
                rc = rockchip_get_mux(bank, pin - bank->pin_base);
                if (rc != RK_FUNC_GPIO)
                        return -EINVAL;
-- 
2.17.1