pinctrl: samsung: Parse pin groups before calling pinctrl_register()

Calling pinctrl_register() means that the driver is fully initialized
and might accept pinmux/pinconf requests, so pin groups must be parsed
before.

This patch fixes this problem by moving device tree parsing before call
to pinctrl_register(). In addition, this fixes support for hogs on
pin controllers handled by pinctrl-samsung driver.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/pinctrl/pinctrl-samsung.c b/drivers/pinctrl/pinctrl-samsung.c
index a7fa9e2d4751..439f2ef680df 100644
--- a/drivers/pinctrl/pinctrl-samsung.c
+++ b/drivers/pinctrl/pinctrl-samsung.c
@@ -767,6 +767,10 @@ static int samsung_pinctrl_register(struct platform_device *pdev,
                 }
         }
 
+        ret = samsung_pinctrl_parse_dt(pdev, drvdata);
+        if (ret)
+                return ret;
+
         drvdata->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, drvdata);
         if (!drvdata->pctl_dev) {
                 dev_err(&pdev->dev, "could not register pinctrl driver\n");
@@ -784,12 +788,6 @@ static int samsung_pinctrl_register(struct platform_device *pdev,
                 pinctrl_add_gpio_range(drvdata->pctl_dev, &pin_bank->grange);
         }
 
-        ret = samsung_pinctrl_parse_dt(pdev, drvdata);
-        if (ret) {
-                pinctrl_unregister(drvdata->pctl_dev);
-                return ret;
-        }
-
         return 0;
 }