pinctrl: make pinmux disable function optional
Some SoCs may not have pinmux disable function in HW.
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 220fa49..3d5ac73 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -41,8 +41,7 @@
!ops->get_functions_count ||
!ops->get_function_name ||
!ops->get_function_groups ||
- !ops->enable ||
- !ops->disable) {
+ !ops->enable) {
dev_err(pctldev->dev, "pinmux ops lacks necessary functions\n");
return -EINVAL;
}
@@ -497,7 +496,8 @@
desc->mux_setting = NULL;
}
- ops->disable(pctldev, setting->data.mux.func, setting->data.mux.group);
+ if (ops->disable)
+ ops->disable(pctldev, setting->data.mux.func, setting->data.mux.group);
}
#ifdef CONFIG_DEBUG_FS