On Fri, 2015-04-17 at 11:50 +0100, Peter Griffin wrote: > --- a/drivers/clocksource/Kconfig > +++ b/drivers/clocksource/Kconfig > +config CLKSRC_ST_LPC_CLOCK > + bool > + depends on ARCH_STI > + select CLKSRC_OF if OF > + help > + Enable this option to use the Low Power controller timer > + as clock source. > + > +config CLKSRC_ST_LPC_TIMER_SCHED_CLOCK > + bool > + depends on ST_LPC_CLOCK It looks like you meant depends on CLKSRC_ST_LPC_CLOCK > + default y > + help > + Use Low Power controller timer clock source as sched_clock > --- a/drivers/clocksource/Makefile > +++ b/drivers/clocksource/Makefile > +obj-$(CONFIG_CLKSRC_ST_LPC_CLOCK) += st_lpc.o > --- /dev/null > +++ b/drivers/clocksource/st_lpc.c > +#ifdef CONFIG_CLKSRC_LPC_TIMER_SCHED_CLOCK #ifdef CONFIG_CLKSRC_ST_LPC_TIMER_SCHED_CLOCK here? > +static u64 notrace st_lpc_sched_clock_read(void) > +{ > + return st_lpc_counter_read(); > +} > +#endif > +#ifdef CONFIG_CLKSRC_LPC_TIMER_SCHED_CLOCK Again, #ifdef CONFIG_CLKSRC_ST_LPC_TIMER_SCHED_CLOCK here? > + sched_clock_register(st_lpc_sched_clock_read, 64, rate); > +#endif Assuming the above suggestions are correct: checkkconfigsymbols.py, as shipped in linux-next, helps detect stuff like this. See scripts/checkkconfigsymbols.py --help. Thanks, Paul Bolle -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html