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[03/24] USB: serial: f81534: fix TIOCGSERIAL implementation

Message ID 20210407103925.829-4-johan@kernel.org
State New
Headers show
Series USB: serial: TIOCSSERIAL fixes and generic support | expand

Commit Message

Johan Hovold April 7, 2021, 10:39 a.m. UTC 
TIOCSSERIAL is a horrid, underspecified, legacy interface which for most
serial devices is only useful for setting the close_delay and
closing_wait parameters.

The port parameter is used to set the I/O port and does not make any
sense to use for USB serial devices.

The close_delay and closing_wait parameters returned by TIOCGSERIAL are
specified in centiseconds. The driver does not yet support changing
these, but let's report back the default values actually used (0.5 and
30 seconds, respectively).

Fixes: aac1fc386fa1 ("USB: serial: add Fintek F81232 usb to serial driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/usb/serial/f81534.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c
index a763b362f081..c9f90d437e3a 100644
--- a/drivers/usb/serial/f81534.c
+++ b/drivers/usb/serial/f81534.c
@@ -1149,9 +1149,11 @@  static int f81534_get_serial_info(struct tty_struct *tty,
 	port_priv = usb_get_serial_port_data(port);
 
 	ss->type = PORT_16550A;
-	ss->port = port->port_number;
 	ss->line = port->minor;
 	ss->baud_base = port_priv->baud_base;
+	ss->close_delay = 50;
+	ss->closing_wait = 3000;
+
 	return 0;
 }