diff options
Diffstat (limited to 'drivers/media/platform/vivid/vivid-ctrls.c')
| -rw-r--r-- | drivers/media/platform/vivid/vivid-ctrls.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/media/platform/vivid/vivid-ctrls.c b/drivers/media/platform/vivid/vivid-ctrls.c index 4ab7c4b..b98089c 100644 --- a/drivers/media/platform/vivid/vivid-ctrls.c +++ b/drivers/media/platform/vivid/vivid-ctrls.c @@ -954,7 +954,7 @@ static const struct v4l2_ctrl_config vivid_ctrl_has_scaler_out = { static int vivid_streaming_s_ctrl(struct v4l2_ctrl *ctrl) { struct vivid_dev *dev = container_of(ctrl->handler, struct vivid_dev, ctrl_hdl_streaming); - struct timeval tv; + u64 rem; switch (ctrl->id) { case VIVID_CID_DQBUF_ERROR: @@ -993,8 +993,16 @@ static int vivid_streaming_s_ctrl(struct v4l2_ctrl *ctrl) dev->time_wrap_offset = 0; break; } - v4l2_get_timestamp(&tv); - dev->time_wrap_offset = -tv.tv_sec - 16; + /* + * We want to set the time 16 seconds before the 32 bit tv_sec + * value of struct timeval would wrap around. So first we + * calculate ktime_get_ns() % ((1 << 32) * NSEC_PER_SEC), and + * then we set the offset to ((1 << 32) - 16) * NSEC_PER_SEC). + */ + div64_u64_rem(ktime_get_ns(), + 0x100000000ULL * NSEC_PER_SEC, &rem); + dev->time_wrap_offset = + (0x100000000ULL - 16) * NSEC_PER_SEC - rem; break; } return 0; |
