linux-kernel - [PATCH v2 1/2] mfd: intel_soc_pmic: use 'depends on' instead of 'select'

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Date:   Thu, 15 Jun 2017 15:07:31 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Hans de Goede <hdegoede@...hat.com>, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH v2 1/2] mfd: intel_soc_pmic: use 'depends on' instead of 'select'

From: Arnd Bergmann <arnd@...db.de>

I ran into a build error on ARM with a platform that has a non-standard
clk implementation:

drivers/clk/clk.o: In function `clk_disable':
clk.c:(.text.clk_disable+0x0): multiple definition of `clk_disable'
arch/arm/mach-omap1/clock.o:clock.c:(.text.clk_disable+0x0): first defined here
drivers/clk/clk.o: In function `clk_enable':
clk.c:(.text.clk_enable+0x0): multiple definition of `clk_enable'
arch/arm/mach-omap1/clock.o:clock.c:(.text.clk_enable+0x0): first defined here

The problem is a device driver that uses 'select COMMON_CLK', which is
generally a bad idea: selecting a subsystem should only be done from
a platform, otherwise we run into circular dependencies. The same driver
also selects 'GPIOLIB' and 'I2C', which has a similar effect.

This turns all three into 'depends on', as it should be.

Finally, we can limit the build to x86, unless we are compile testing.

Fixes: 5f125f1f5705 ("mfd: intel_soc_pmic: Select designware i2c-bus driver")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
Changes in v2:
-Split into 2 seperate patches for config INTEL_SOC_PMIC and
 config INTEL_SOC_PMIC_CHTWC
---
 drivers/mfd/Kconfig | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 95e868360e9a..2499f8b5135a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -453,14 +453,12 @@ config LPC_SCH
 
 config INTEL_SOC_PMIC
 	bool "Support for Crystal Cove PMIC"
-	depends on HAS_IOMEM
-	select GPIOLIB
-	select I2C
+	depends on HAS_IOMEM && I2C=y && GPIOLIB && COMMON_CLK
+	depends on X86 || COMPILE_TEST
 	select MFD_CORE
 	select REGMAP_I2C
 	select REGMAP_IRQ
-	select COMMON_CLK
-	select I2C_DESIGNWARE_PLATFORM
+	select I2C_DESIGNWARE_PLATFORM if ACPI
 	help
 	  Select this option to enable support for Crystal Cove PMIC
 	  on some Intel SoC systems. The PMIC provides ADC, GPIO,
-- 
2.13.0