--- drivers/media/video/pwc/pwc-ctrl.c

+++ drivers/media/video/pwc/pwc-ctrl.c

@@ -753,7 +753,7 @@ int pwc_set_shutter_speed(struct pwc_dev

buf[0] = 0xff; /* fixed */

ret = send_control_msg(pdev,

- SET_LUM_CTL, SHUTTER_MODE_FORMATTER, &buf, sizeof(buf));

+ SET_LUM_CTL, SHUTTER_MODE_FORMATTER, &buf, 1);

if (!mode && ret >= 0) {

if (value < 0)