When I cat module parameter 'clock' by sysfs, it displays as follows. It is better to add a newline for easy reading. [root@hulk-202 ~]# cat /sys/module/uvcvideo/parameters/clock CLOCK_MONOTONIC[root@hulk-202 ~]# Signed-off-by: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx> --- drivers/media/usb/uvc/uvc_driver.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 431d86e..e4d2334 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -2356,9 +2356,9 @@ static int uvc_reset_resume(struct usb_interface *intf) static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) { if (uvc_clock_param == CLOCK_MONOTONIC) - return sprintf(buffer, "CLOCK_MONOTONIC"); + return sprintf(buffer, "CLOCK_MONOTONIC\n"); else - return sprintf(buffer, "CLOCK_REALTIME"); + return sprintf(buffer, "CLOCK_REALTIME\n"); } static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) -- 1.7.12.4