It is preferrable to include export.h when you are using EXPORT_SYMBOL family of macros. Signed-off-by: Amit Kucheria <amit.kucheria@xxxxxxxxxx> --- drivers/thermal/clock_cooling.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/thermal/clock_cooling.c b/drivers/thermal/clock_cooling.c index fd6bc6eefc88..56cb1f46a428 100644 --- a/drivers/thermal/clock_cooling.c +++ b/drivers/thermal/clock_cooling.c @@ -16,6 +16,7 @@ #include <linux/cpufreq.h> #include <linux/device.h> #include <linux/err.h> +#include <linux/export.h> #include <linux/idr.h> #include <linux/mutex.h> #include <linux/pm_opp.h> -- 2.20.1