We currently sleep for 50 ms at the end of each iteration in ub960_rxport_wait_locks(). This feels a bit excessive, especially as we always do at least two loops, so there's always at least one sleep, even if we already have a stable lock. Change the sleep to 10 ms. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> --- drivers/media/i2c/ds90ub960.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c index a4a624816d8b..64b5297c5f22 100644 --- a/drivers/media/i2c/ds90ub960.c +++ b/drivers/media/i2c/ds90ub960.c @@ -1576,7 +1576,12 @@ static int ub960_rxport_wait_locks(struct ub960_data *priv, if (missing == 0) break; - msleep(50); + /* + * The sleep time of 10 ms was found by testing to give a lock + * with a few iterations. It can be decreased if on some setups + * the lock can be achieved much faster. + */ + fsleep(10 * USEC_PER_MSEC); } if (lock_mask) -- 2.43.0
