[PATCH 15/24] USB: serial: usb_wwan: fix TIOCSSERIAL jiffies conversions

[Johan Hovold]

The port close_delay and closing_wait parameters set by TIOCSSERIAL are
specified in jiffies and not milliseconds.

Add the missing conversions so that the TIOCSSERIAL works as expected
also when HZ is not 1000.

Fixes: 02303f73373a ("usb-wwan: implement TIOCGSERIAL and TIOCSSERIAL to avoid 
blocking close(2)")
Cc: sta...@vger.kernel.org      # 2.6.38
Signed-off-by: Johan Hovold <jo...@kernel.org>
---
 drivers/usb/serial/usb_wwan.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 46d46a4f99c9..4e9c994a972a 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -140,10 +140,10 @@ int usb_wwan_get_serial_info(struct tty_struct *tty,
        ss->line            = port->minor;
        ss->port            = port->port_number;
        ss->baud_base       = tty_get_baud_rate(port->port.tty);
-       ss->close_delay     = port->port.close_delay / 10;
+       ss->close_delay     = jiffies_to_msecs(port->port.close_delay) / 10;
        ss->closing_wait    = port->port.closing_wait == 
ASYNC_CLOSING_WAIT_NONE ?
                                 ASYNC_CLOSING_WAIT_NONE :
-                                port->port.closing_wait / 10;
+                                jiffies_to_msecs(port->port.closing_wait) / 10;
        return 0;
 }
 EXPORT_SYMBOL(usb_wwan_get_serial_info);
@@ -155,9 +155,10 @@ int usb_wwan_set_serial_info(struct tty_struct *tty,
        unsigned int closing_wait, close_delay;
        int retval = 0;
 
-       close_delay = ss->close_delay * 10;
+       close_delay = msecs_to_jiffies(ss->close_delay * 10);
        closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
-                       ASYNC_CLOSING_WAIT_NONE : ss->closing_wait * 10;
+                       ASYNC_CLOSING_WAIT_NONE :
+                       msecs_to_jiffies(ss->closing_wait * 10);
 
        mutex_lock(&port->port.mutex);
 
-- 
2.26.3