Compiling this driver without setting "CONFIG_SONY_FF" generates the following warning: drivers/hid/hid-sony.c:2358:20: warning: unused function 'sony_send_output_report' [-Wunused-function] static inline void sony_send_output_report(struct sony_sc *sc) ^ 1 warning generated. Add the missing preprocessor check to fix it. Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx> --- drivers/hid/hid-sony.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 03691cdcfb8e..13125997ab5e 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -2355,11 +2355,13 @@ static void motion_send_output_report(struct sony_sc *sc) hid_hw_output_report(hdev, (u8 *)report, MOTION_REPORT_0x02_SIZE); } +#ifdef CONFIG_SONY_FF static inline void sony_send_output_report(struct sony_sc *sc) { if (sc->send_output_report) sc->send_output_report(sc); } +#endif static void sony_state_worker(struct work_struct *work) { -- 2.38.1