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    Subject[PATCH] mfd: MFD_MAX77686 needs to select REGMAP_I2C and IRQ_DOMAIN
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    Select REGMAP_I2C to fix below build errors:

    CC drivers/mfd/max77686.o
    drivers/mfd/max77686.c:43:15: error: variable 'max77686_regmap_config' has initializer but incomplete type
    drivers/mfd/max77686.c:44:2: error: unknown field 'reg_bits' specified in initializer
    drivers/mfd/max77686.c:44:2: warning: excess elements in struct initializer [enabled by default]
    drivers/mfd/max77686.c:44:2: warning: (near initialization for 'max77686_regmap_config') [enabled by default]
    drivers/mfd/max77686.c:45:2: error: unknown field 'val_bits' specified in initializer
    drivers/mfd/max77686.c:45:2: warning: excess elements in struct initializer [enabled by default]
    drivers/mfd/max77686.c:45:2: warning: (near initialization for 'max77686_regmap_config') [enabled by default]
    drivers/mfd/max77686.c: In function 'max77686_i2c_probe':
    drivers/mfd/max77686.c:60:2: error: implicit declaration of function 'regmap_init_i2c' [-Werror=implicit-function-declaration]
    drivers/mfd/max77686.c:60:19: warning: assignment makes pointer from integer without a cast [enabled by default]
    cc1: some warnings being treated as errors
    make[2]: *** [drivers/mfd/max77686.o] Error 1
    make[1]: *** [drivers/mfd] Error 2
    make: *** [drivers] Error 2

    Select IRQ_DOMAIN to fix below build errors:

    CC drivers/mfd/max77686-irq.o
    drivers/mfd/max77686-irq.c: In function 'max77686_irq_thread':
    drivers/mfd/max77686-irq.c:213:4: error: implicit declaration of function 'irq_find_mapping' [-Werror=implicit-function-declaration]
    drivers/mfd/max77686-irq.c: In function 'max77686_irq_init':
    drivers/mfd/max77686-irq.c:282:2: error: implicit declaration of function 'irq_domain_add_linear' [-Werror=implicit-function-declaration]
    drivers/mfd/max77686-irq.c:282:9: warning: assignment makes pointer from integer without a cast [enabled by default]
    cc1: some warnings being treated as errors
    make[2]: *** [drivers/mfd/max77686-irq.o] Error 1
    make[1]: *** [drivers/mfd] Error 2
    make: *** [drivers] Error 2

    Signed-off-by: Axel Lin <axel.lin@gmail.com>
    ---
    drivers/mfd/Kconfig | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
    index 3b59661..a7d0c85 100644
    --- a/drivers/mfd/Kconfig
    +++ b/drivers/mfd/Kconfig
    @@ -426,6 +426,8 @@ config MFD_MAX77686
    bool "Maxim Semiconductor MAX77686 PMIC Support"
    depends on I2C=y && GENERIC_HARDIRQS
    select MFD_CORE
    + select REGMAP_I2C
    + select IRQ_DOMAIN
    help
    Say yes here to support for Maxim Semiconductor MAX77686.
    This is a Power Management IC with RTC on chip.
    --
    1.7.9.5




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