summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorPeter Hurley <peter@hurleysoftware.com>2016-04-10 02:53:23 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-30 18:26:55 +0200
commit2d68655d15bc99981394f7caa769a14b03cac131 (patch)
treea61f1f9ffe92c21ff69fdd3f09c8f921f0670fcf /include
parenttty: Replace ASYNC_NORMAL_ACTIVE bit and update atomically (diff)
downloadlinux-2d68655d15bc99981394f7caa769a14b03cac131.tar.xz
linux-2d68655d15bc99981394f7caa769a14b03cac131.zip
tty: Replace ASYNC_CHECK_CD and update atomically
Replace ASYNC_CHECK_CD bit in the tty_port::flags field with TTY_PORT_CHECK_CD bit in the tty_port::iflags field. Introduce helpers tty_port_set_check_carrier() and tty_port_check_carrier() to abstract the atomic bit ops. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/tty.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index dbeeb8666ae4..4254dfb12fb1 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -584,6 +584,19 @@ static inline void tty_port_set_active(struct tty_port *port, bool val)
clear_bit(TTY_PORT_ACTIVE, &port->iflags);
}
+static inline bool tty_port_check_carrier(struct tty_port *port)
+{
+ return test_bit(TTY_PORT_CHECK_CD, &port->iflags);
+}
+
+static inline void tty_port_set_check_carrier(struct tty_port *port, bool val)
+{
+ if (val)
+ set_bit(TTY_PORT_CHECK_CD, &port->iflags);
+ else
+ clear_bit(TTY_PORT_CHECK_CD, &port->iflags);
+}
+
extern struct tty_struct *tty_port_tty_get(struct tty_port *port);
extern void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty);
extern int tty_port_carrier_raised(struct tty_port *port);