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gpio: of: Fix NPE from OF flags 

Some calls to of_get_named_gpio() calls sets the flags
argument to NULL because they are not interested in the
flags. This caused a null pointer exception since we were
unconditionally using these flags. Fix it.

Fixes: 6a537d4846 ("gpio: of: Support regulator nonstandard GPIO properties")
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Linus Walleij 2018-01-16 23:44:46 +01:00
parent 0f7192318b
commit 605f2d34ea
1 changed files with 2 additions and 1 deletions
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3
drivers/gpio/gpiolib-of.c
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@ -129,7 +129,8 @@ struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
if (IS_ERR(desc))
goto out;
of_gpio_flags_quirks(np, flags);
if (flags)
of_gpio_flags_quirks(np, flags);
pr_debug("%s: parsed '%s' property of node '%pOF[%d]' - status (%d)\n",
__func__, propname, np, index,