On 01/06/14 12:32, Guenter Roeck wrote: > On Mon, Jan 06, 2014 at 11:51:36AM -0800, Randy Dunlap wrote: >> On 01/06/14 01:40, Stephen Rothwell wrote: >>> Hi all, >>> >>> This tree fails (more than usual) the powerpc allyesconfig build. >>> >>> Changes since 20131224: >>> >> >> >> on i386: >> >> drivers/built-in.o: In function `lm75_remove': >> lm75.c:(.text+0x12bd8c): undefined reference to `thermal_zone_of_sensor_unregister' >> drivers/built-in.o: In function `lm75_probe': >> lm75.c:(.text+0x12c123): undefined reference to `thermal_zone_of_sensor_register' >> > > AFAICS that is a dependency problem in thermal code. > CONFIG_THERMAL=m defines the symbols, but CONFIG_SENSORS_LM75=y. CONFIG_THERMAL_OF defines the symbols. It looks to me like drivers/hwmon/Kconfig SENSORS_LM75 entry needs a depends on THERMAL_OF line, but that won't fix this build error. The problem (once again, not the first time that I have seen this one) is that we have a tristate =m that depends on a bool =y. Hm, I bet a "depends on THERMAL" for SENSORS_LM75 will fix this. [test] Yes, that restricts (limits) SENSORS_LM75 to n/m; y is not possible. Patch for your consideration is below. > > Up to the thermal folks to fix; if the code ends up in mainline we'll have to > revert the patch introducing the calls to the lm75 driver (and the tmp102 driver > which has the same issue). > > Another oddity is the help text to THERMAL_OF, which states that it supports > reading and parsing thermal data definitions out of dt but fails to mention > that it also provides the above API functions. --- From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Fix SENSORS_LM75 dependencies to eliminate build errors: drivers/built-in.o: In function `lm75_remove': lm75.c:(.text+0x12bd8c): undefined reference to `thermal_zone_of_sensor_unregister' drivers/built-in.o: In function `lm75_probe': lm75.c:(.text+0x12c123): undefined reference to `thermal_zone_of_sensor_register' Add depends on THERMAL_OF since that is what provides the register/unregister functions above. Add depends on THERMAL since THERMAL is a tristate (while THERMAL_OF is a bool) and SENSORS_LM75 (tristate) needs to be limited to modular builds when THERMAL=m. Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> --- drivers/hwmon/Kconfig | 2 ++ 1 file changed, 2 insertions(+) --- linux-next-20140106.orig/drivers/hwmon/Kconfig +++ linux-next-20140106/drivers/hwmon/Kconfig @@ -650,6 +650,8 @@ config SENSORS_LM73 config SENSORS_LM75 tristate "National Semiconductor LM75 and compatibles" depends on I2C + depends on THERMAL + depends on THERMAL_OF help If you say yes here you get support for one common type of temperature sensor chip, with models including: _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
