[PATCH 01/16] staging: fwserial: fix TIOCSSERIAL jiffies conversions

Johan Hovold
2021-04-07T10:23:55Z

The port close_delay parameter set by TIOCSSERIAL is specified in
jiffies, while the value returned by TIOCGSERIAL is specified in
centiseconds.

Add the missing conversions so that TIOCGSERIAL works as expected also
when HZ is not 100.

Fixes: 7355ba3445f2 ("staging: fwserial: Add TTY-over-Firewire serial driver")
Cc: stable@vger.kernel.org # 3.8
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/staging/fwserial/fwserial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index c368082aae1a..c963848522b1 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -1223,7 +1223,7 @@ static int get_serial_info(struct tty_struct *tty,
ss->flags = port->port.flags;
ss->xmit_fifo_size = FWTTY_PORT_TXFIFO_LEN;
ss->baud_base = 400000000;
- ss->close_delay = port->port.close_delay;
+ ss->close_delay = jiffies_to_msecs(port->port.close_delay) / 10;
mutex_unlock(&port->port.mutex);
return 0;
}
@@ -1245,7 +1245,7 @@ static int set_serial_info(struct tty_struct *tty,
return -EPERM;
}
}
- port->port.close_delay = ss->close_delay * HZ / 100;
+ port->port.close_delay = msecs_to_jiffies(ss->close_delay * 10);
mutex_unlock(&port->port.mutex);

return 0;
--
2.26.3