pinctrl: don't fall back to pinctrl_select_state_simple()

If CONFIG_PINCTRL_FULL is enabled, never fall back to the simple
implementation. pinctrl_select_state() is called for each device and it
is expected to fail. A fallback to the simple imeplementation doesn't
make much sense.

To keep the return code consistent, we need to change the -EINVAL (which
was ignored before) to -ENOSYS.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c
index a1b85ca..6978a93 100644 (file)
--- a/drivers/pinctrl/pinctrl-uclass.c
+++ b/drivers/pinctrl/pinctrl-uclass.c
@@ -71,13 +71,13 @@ static int pinctrl_select_state_full(struct udevice *dev, const char *statename)
                 */
                state = dectoul(statename, &end);
                if (*end)
-                       return -EINVAL;
+                       return -ENOSYS;
        }
 
        snprintf(propname, sizeof(propname), "pinctrl-%d", state);
        list = dev_read_prop(dev, propname, &size);
        if (!list)
-               return -EINVAL;
+               return -ENOSYS;
 
        size /= sizeof(*list);
        for (i = 0; i < size; i++) {
@@ -162,11 +162,6 @@ U_BOOT_DRIVER(pinconfig_generic) = {
 };
 
 #else
-static int pinctrl_select_state_full(struct udevice *dev, const char *statename)
-{
-       return -ENODEV;
-}
-
 static int pinconfig_post_bind(struct udevice *dev)
 {
        return 0;
@@ -317,10 +312,10 @@ int pinctrl_select_state(struct udevice *dev, const char *statename)
         * Try full-implemented pinctrl first.
         * If it fails or is not implemented, try simple one.
         */
-       if (pinctrl_select_state_full(dev, statename))
-               return pinctrl_select_state_simple(dev);
+       if (CONFIG_IS_ENABLED(PINCTRL_FULL))
+               return pinctrl_select_state_full(dev, statename);
 
-       return 0;
+       return pinctrl_select_state_simple(dev);
 }
 
 int pinctrl_request(struct udevice *dev, int func, int flags)