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gpio: raspberrypi-ext: fix firmware dependency

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When the firmware driver is a loadable module, the gpio driver cannot be
built-in:

drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_set':
gpio-raspberrypi-exp.c:(.text+0xb4): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_get':
gpio-raspberrypi-exp.c:(.text+0x1ec): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_get_direction':
gpio-raspberrypi-exp.c:(.text+0x360): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_get_polarity':
gpio-raspberrypi-exp.c:(.text+0x4d4): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_dir_out':
gpio-raspberrypi-exp.c:(.text+0x670): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o:gpio-raspberrypi-exp.c:(.text+0x7fc): more undefined references to `rpi_firmware_property' follow
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_dir_in':
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_probe':
gpio-raspberrypi-exp.c:(.text+0x93c): undefined reference to `rpi_firmware_get'

We already have a Kconfig dependency for it, but when compile-testing, it
is disregarded.

This changes the dependency so that compile-testing is only done when the
firmware driver is completely disabled.

Fixes: a98d90e7d5 ("gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Arnd Bergmann 2018-02-28 14:48:08 +01:00 committed by Linus Walleij
parent 9d5a1f2ca6
commit 7ed915059c
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/Kconfig
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@ -126,7 +126,7 @@ config GPIO_RASPBERRYPI_EXP
tristate "Raspberry Pi 3 GPIO Expander" tristate "Raspberry Pi 3 GPIO Expander"
default RASPBERRYPI_FIRMWARE default RASPBERRYPI_FIRMWARE
depends on OF_GPIO depends on OF_GPIO
depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || COMPILE_TEST depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
help help
Turn on GPIO support for the expander on Raspberry Pi 3 boards, using Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
the firmware mailbox to communicate with VideoCore on BCM283x chips. the firmware mailbox to communicate with VideoCore on BCM283x chips.