linux-kernel - [PATCH -next] power/supply: fix sc27xx_fuel

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Date:   Mon, 12 Nov 2018 09:06:32 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     LKML <linux-kernel@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        Sebastian Reichel <sre@...nel.org>
Subject: [PATCH -next] power/supply: fix sc27xx_fuel_gauge build errors

From: Randy Dunlap <rdunlap@...radead.org>

Fix build errors when FUEL_GUAGE_SC27XX is enabled but IIO is either
not enabled or IIO=m and FUEL_GUAGE_SC27XX=y.

ld: drivers/power/supply/sc27xx_fuel_gauge.o: in function `sc27xx_fgu_get_temp':
sc27xx_fuel_gauge.c:(.text+0x1d2): undefined reference to `iio_read_channel_processed'
ld: drivers/power/supply/sc27xx_fuel_gauge.o: in function `sc27xx_fgu_probe':
sc27xx_fuel_gauge.c:(.text+0x97f): undefined reference to `devm_iio_channel_get'

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Sebastian Reichel <sre@...nel.org>
Cc: linux-pm@...r.kernel.org
---
 drivers/power/supply/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20181112.orig/drivers/power/supply/Kconfig
+++ linux-next-20181112/drivers/power/supply/Kconfig
@@ -655,6 +655,7 @@ config CHARGER_SC2731
 config FUEL_GAUGE_SC27XX
 	tristate "Spreadtrum SC27XX fuel gauge driver"
 	depends on MFD_SC27XX_PMIC || COMPILE_TEST
+	depends on IIO
 	help
 	 Say Y here to enable support for fuel gauge with SC27XX
 	 PMIC chips.