linux-kernel - [PATCH 17/69] TTY: isdn, define tty_port

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon,  2 Apr 2012 13:54:01 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	gregkh@...uxfoundation.org
Cc:	alan@...ux.intel.com, linux-kernel@...r.kernel.org,
	jirislaby@...il.com, Karsten Keil <isdn@...ux-pingi.de>
Subject: [PATCH 17/69] TTY: isdn, define tty_port_operations

Add there .carrier_raised. It is taken from current block_til_ready.
We will need tty_port->ops->carrier_raised for
tty_port_block_til_ready helper.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Karsten Keil <isdn@...ux-pingi.de>
---
 drivers/isdn/i4l/isdn_tty.c |   14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 50d7246..b41a80a 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1485,6 +1485,7 @@ isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
  * isdn_tty_open() and friends
  * ------------------------------------------------------------
  */
+
 static int
 isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *info)
 {
@@ -1552,7 +1553,7 @@ isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *
 			break;
 		}
 		if (!(port->flags & ASYNC_CLOSING) &&
-		    (do_clocal || (info->msr & UART_MSR_DCD))) {
+		    (do_clocal || tty_port_carrier_raised(port))) {
 			break;
 		}
 		if (signal_pending(current)) {
@@ -1848,6 +1849,16 @@ static const struct tty_operations modem_ops = {
 	.tiocmset = isdn_tty_tiocmset,
 };
 
+static int isdn_tty_carrier_raised(struct tty_port *port)
+{
+	modem_info *info = container_of(port, modem_info, port);
+	return info->msr & UART_MSR_DCD;
+}
+
+static const struct tty_port_operations isdn_tty_port_ops = {
+	.carrier_raised = isdn_tty_carrier_raised,
+};
+
 int
 isdn_tty_modem_init(void)
 {
@@ -1884,6 +1895,7 @@ isdn_tty_modem_init(void)
 		}
 #endif
 		tty_port_init(&info->port);
+		info->port.ops = &isdn_tty_port_ops;
 		spin_lock_init(&info->readlock);
 		sprintf(info->last_cause, "0000");
 		sprintf(info->last_num, "none");
-- 
1.7.9.2


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/