linux-kernel - [PATCH] iio: adc: sun4i-gpadc: select REGMAP

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Message-Id: <20180525153451.3164970-1-arnd@arndb.de>
Date:   Fri, 25 May 2018 17:34:23 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     Quentin Schulz <quentin.schulz@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Arnd Bergmann <arnd@...db.de>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Mark Brown <broonie@...nel.org>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] iio: adc: sun4i-gpadc: select REGMAP_IRQ

We can't call regmap_irq_get_virq() unless the regmap-irq support
is enabled:

drivers/iio/adc/sun4i-gpadc-iio.o: In function `sun4i_irq_init':
sun4i-gpadc-iio.c:(.text+0x59c): undefined reference to `regmap_irq_get_virq'

I came across this in a randconfig build now, but I guess this is
a much older problem that I simply never hit before because regmap_irq
is usually enabled by one of the other drivers that need it.

Fixes: d1caa9905538 ("iio: adc: add support for Allwinner SoCs ADC")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/iio/adc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 9da79070357c..13922b595503 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -717,6 +717,7 @@ config SUN4I_GPADC
 	depends on IIO
 	depends on MFD_SUN4I_GPADC || MACH_SUN8I
 	depends on THERMAL || !THERMAL_OF
+	select REGMAP_IRQ
 	help
 	  Say yes here to build support for Allwinner (A10, A13 and A31) SoCs
 	  GPADC. This ADC provides 4 channels which can be used as an ADC or as
-- 
2.9.0