From 942cde724075f840ded89390b10dce1a47a4d712 Mon Sep 17 00:00:00 2001
From: Tony Lindgren <tony@atomide.com>
Date: Thu, 3 Sep 2015 10:34:30 -0700
Subject: [PATCH] pinctrl: core: Warn about NULL gpio_chip in
 pinctrl_ready_for_gpio_range()

If the gpio driver is confused about the numbers for gpio-ranges,
pinctrl_ready_for_gpio_range() may get called with invalid GPIO
causing a NULL pointer exception. Let's instead provide a warning
that allows fixing the problem and return with error.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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