As explained in Documentation/timers/timers-howto.rst
the small amount of milliseconds sometimes produces
much longer delays.
Replace msleep(1) with usleep_range(1000, 1100).
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
v3: previous patch in the series has been dropped for now, thus,
this one reconstructed accordingly
drivers/tty/serial/8250/8250_exar.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 873aa6b0c2f3..597eb9d16f21 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -180,7 +180,7 @@ static void exar_shutdown(struct uart_port *port)
tx_complete = 1;
else
tx_complete = 0;
- msleep(1);
+ usleep_range(1000, 1100);
} while (!uart_circ_empty(xmit) && !tx_complete && i++ < 1000);
serial8250_do_shutdown(port);
--
2.20.1
