From: Johan Hovold <johan@kernel.org>
To: Johan Hovold <johan@kernel.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 06/24] USB: serial: io_ti: fix TIOCGSERIAL implementation
Date: Wed, 7 Apr 2021 12:39:07 +0200 [thread overview]
Message-ID: <20210407103925.829-7-johan@kernel.org> (raw)
In-Reply-To: <20210407103925.829-1-johan@kernel.org>
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 xmit_fifo_size parameter could be used to set the hardware transmit
fifo size of a legacy UART when it could not be detected, but the
interface is limited to eight bits and should be left unset when not
used.
Similarly, baud_base could be used to set the UART base clock when it
could not be detected but might as well be left unset when it is not
known.
The close_delay and closing_wait parameters returned by TIOCGSERIAL are
specified in centiseconds (not jiffies). The driver does not yet support
changing close_delay, but let's report back the default value actually
used (0.5 seconds).
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/serial/io_ti.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index e800547be9e0..f5aab570fd05 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -2437,21 +2437,17 @@ static int get_serial_info(struct tty_struct *tty,
struct serial_struct *ss)
{
struct usb_serial_port *port = tty->driver_data;
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned cwait;
- cwait = edge_port->port->port.closing_wait;
+ cwait = port->port.closing_wait;
if (cwait != ASYNC_CLOSING_WAIT_NONE)
cwait = jiffies_to_msecs(cwait) / 10;
ss->type = PORT_16550A;
- ss->line = edge_port->port->minor;
- ss->port = edge_port->port->port_number;
- ss->irq = 0;
- ss->xmit_fifo_size = edge_port->port->bulk_out_size;
- ss->baud_base = 9600;
- ss->close_delay = 5*HZ;
+ ss->line = port->minor;
+ ss->close_delay = 50;
ss->closing_wait = cwait;
+
return 0;
}
--
2.26.3
next prev parent reply other threads:[~2021-04-07 10:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 10:39 [PATCH 00/24] USB: serial: TIOCSSERIAL fixes and generic support Johan Hovold
2021-04-07 10:39 ` [PATCH 01/24] USB: serial: ark3116: fix TIOCGSERIAL implementation Johan Hovold
2021-04-07 10:39 ` [PATCH 02/24] USB: serial: f81232: " Johan Hovold
2021-04-07 10:39 ` [PATCH 03/24] USB: serial: f81534: " Johan Hovold
2021-04-07 10:39 ` [PATCH 04/24] USB: serial: ftdi_sio: " Johan Hovold
2021-04-07 10:39 ` [PATCH 05/24] USB: serial: io_edgeport: " Johan Hovold
2021-04-07 10:39 ` Johan Hovold [this message]
2021-04-07 10:39 ` [PATCH 07/24] USB: serial: mos7720: " Johan Hovold
2021-04-07 10:39 ` [PATCH 08/24] USB: serial: mos7840: " Johan Hovold
2021-04-07 10:39 ` [PATCH 09/24] USB: serial: opticon: " Johan Hovold
2021-04-07 10:39 ` [PATCH 10/24] USB: serial: pl2303: " Johan Hovold
2021-04-07 10:39 ` [PATCH 11/24] USB: serial: quatech2: " Johan Hovold
2021-04-07 10:39 ` [PATCH 12/24] USB: serial: ssu100: " Johan Hovold
2021-04-07 10:39 ` [PATCH 13/24] USB: serial: ti_usb_3410_5052: " Johan Hovold
2021-04-07 10:39 ` [PATCH 14/24] USB: serial: ti_usb_3410_5052: fix TIOCSSERIAL permission check Johan Hovold
2021-04-07 10:39 ` [PATCH 15/24] USB: serial: usb_wwan: fix TIOCSSERIAL jiffies conversions Johan Hovold
2021-04-07 10:39 ` [PATCH 16/24] USB: serial: usb_wwan: fix unprivileged TIOCCSERIAL Johan Hovold
2021-04-07 10:39 ` [PATCH 17/24] USB: serial: usb_wwan: fix TIOCGSERIAL implementation Johan Hovold
2021-04-07 10:39 ` [PATCH 18/24] USB: serial: whiteheat: " Johan Hovold
2021-04-07 10:39 ` [PATCH 19/24] USB: serial: fix return value for unsupported ioctls Johan Hovold
2021-04-07 10:39 ` [PATCH 20/24] USB: serial: add generic support for TIOCSSERIAL Johan Hovold
2021-04-07 10:39 ` [PATCH 21/24] USB: serial: stop reporting legacy UART types Johan Hovold
2021-04-07 10:39 ` [PATCH 22/24] USB: serial: ftdi_sio: ignore baud_base changes Johan Hovold
2021-04-07 10:39 ` [PATCH 23/24] USB: serial: ftdi_sio: simplify TIOCGSERIAL permission check Johan Hovold
2021-04-07 10:39 ` [PATCH 24/24] USB: serial: ftdi_sio: clean up TIOCSSERIAL Johan Hovold
2021-04-07 15:23 ` [PATCH 00/24] USB: serial: TIOCSSERIAL fixes and generic support Greg KH
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210407103925.829-7-johan@kernel.org \
--to=johan@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).