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SubjectRe: [PATCH 4.19 21/57] gpio: Fix build error of function redefinition
On Sun 2019-09-08 13:41:45, Greg Kroah-Hartman wrote:
> [ Upstream commit 68e03b85474a51ec1921b4d13204782594ef7223 ]
>
> when do randbuilding, I got this error:
>
> In file included from drivers/hwmon/pmbus/ucd9000.c:19:0:
> ./include/linux/gpio/driver.h:576:1: error: redefinition of gpiochip_add_pin_range
> gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
> ^~~~~~~~~~~~~~~~~~~~~~
> In file included from drivers/hwmon/pmbus/ucd9000.c:18:0:
> ./include/linux/gpio.h:245:1: note: previous definition of gpiochip_add_pin_range was here
> gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
> ^~~~~~~~~~~~~~~~~~~~~~
>

I'm pretty sure this will cause problems.

driver.h versions return zero and are conditional on !CONFIG_PINCTRL.

gpio.h versions did return error and did warn... and are conditional
on !CONFIG_GPIOLIB.

So this introduces error in !CONFIG_PINCTRL && !CONFIG_GPIOLIB case.

Best regards,
Pavel

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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