On Wed, Jan 27, 2016 at 07:33:00AM +0000, Lee Jones wrote:

On Mon, 25 Jan 2016, Arnd Bergmann wrote:

quoted

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(-)

As this touches a core Thermal file, I think it's better off going in
via that tree.  If that's a problem, I can take it with the relevant
Acks.

Acked-by: Lee Jones <redacted>

Thanks, I am adding to linux-next to see how it goes.