Commit dfa97515 authored Nov 20, 2012 by Linus Walleij

pinctrl: make range registration defer properly



This makes the pinctrl_find_and_add_gpio_range() return
-EPROBE_DEFER if the range hosting pin controller cannot be
located. We may assume that the common case for why adding a
range fails is that the targe pin controller device has not
probed yet.

Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

parent 192c369c

drivers/pinctrl/core.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -350,8 +350,13 @@ struct pinctrl_dev pinctrl_find_and_add_gpio_range(const char devname,
		{
		struct pinctrl_dev *pctldev = get_pinctrl_dev_from_devname(devname);

		/*
		* If we can't find this device, let's assume that is because
		* it has not probed yet, so the driver trying to register this
		* range need to defer probing.
		*/
		if (!pctldev)
		return NULL;
		return ERR_PTR(-EPROBE_DEFER);

		pinctrl_add_gpio_range(pctldev, range);
		return pctldev;