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Subject[PATCH 3/3] thermal: allow u8500-thermal driver to be a module
Date
When the thermal subsystem is a loadable module, the u8500 driver
fails to build:

drivers/thermal/built-in.o: In function `db8500_thermal_probe':
db8500_thermal.c:(.text+0x96c): undefined reference to `thermal_zone_device_register'
drivers/thermal/built-in.o: In function `db8500_thermal_work':
db8500_thermal.c:(.text+0xab4): undefined reference to `thermal_zone_device_update'

This changes the symbol to a tristate, so Kconfig can track the
dependency correctly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/mfd/db8500-prcmu.c | 3 +++
drivers/thermal/Kconfig | 4 ++--
2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 2f4a1279b094..c0a86aeb1733 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -2045,6 +2045,7 @@ int db8500_prcmu_config_hotmon(u8 low, u8 high)

return 0;
}
+EXPORT_SYMBOL_GPL(db8500_prcmu_config_hotmon);

static int config_hot_period(u16 val)
{
@@ -2071,11 +2072,13 @@ int db8500_prcmu_start_temp_sense(u16 cycles32k)

return config_hot_period(cycles32k);
}
+EXPORT_SYMBOL_GPL(db8500_prcmu_start_temp_sense);

int db8500_prcmu_stop_temp_sense(void)
{
return config_hot_period(0xFFFF);
}
+EXPORT_SYMBOL_GPL(db8500_prcmu_stop_temp_sense);

static int prcmu_a9wdog(u8 cmd, u8 d0, u8 d1, u8 d2, u8 d3)
{
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 0852fd028dc9..7c92c09be213 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -237,8 +237,8 @@ config DOVE_THERMAL
framework.

config DB8500_THERMAL
- bool "DB8500 thermal management"
- depends on ARCH_U8500
+ tristate "DB8500 thermal management"
+ depends on MFD_DB8500_PRCMU
default y
help
Adds DB8500 thermal management implementation according to the thermal
--
2.7.0
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