The code with uses the dummy var is commented out. So, coment out its definition/initialization. Fix this warning: drivers/staging/media/atomisp/i2c/atomisp-gc2235.c: In function 'gc2235_get_intg_factor': drivers/staging/media/atomisp/i2c/atomisp-gc2235.c:249:26: warning: variable 'dummy' set but not used [-Wunused-but-set-variable] u16 reg_val, reg_val_h, dummy; ^~~~~ Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> --- drivers/staging/media/atomisp/i2c/atomisp-gc2235.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c index 93f9c618f3d8..4b6b6568b3cf 100644 --- a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c +++ b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c @@ -246,7 +246,7 @@ static int gc2235_get_intg_factor(struct i2c_client *client, struct v4l2_subdev *sd = i2c_get_clientdata(client); struct gc2235_device *dev = to_gc2235_sensor(sd); struct atomisp_sensor_mode_data *buf = &info->data; - u16 reg_val, reg_val_h, dummy; + u16 reg_val, reg_val_h; int ret; if (!info) @@ -316,7 +316,9 @@ static int gc2235_get_intg_factor(struct i2c_client *client, if (ret) return ret; - dummy = (reg_val_h << 8) | reg_val; +#if 0 + u16 dummy = (reg_val_h << 8) | reg_val; +#endif ret = gc2235_read_reg(client, GC2235_8BIT, GC2235_SH_DELAY_H, ®_val_h); -- 2.14.3