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authorPeter Hurley <peter@hurleysoftware.com>2016-04-09 17:53:24 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-30 09:26:55 -0700
commit80f02d5424301bf4df195d09b1a664f394435851 (patch)
tree8bfff4fbf3685f767fa776dbd7ae58a63420acd3 /include/linux/tty.h
parent2d68655d15bc99981394f7caa769a14b03cac131 (diff)
tty: Replace ASYNC_SUSPENDED bit and update atomically
Replace ASYNC_SUSPENDED bit in the tty_port::flags field with TTY_PORT_SUSPENDED bit in the tty_port::iflags field. Introduce helpers tty_port_set_suspended() and tty_port_suspended() to abstract atomic bit ops. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tty.h')
-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 4254dfb12fb1..7ac5add66c00 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -597,6 +597,19 @@ static inline void tty_port_set_check_carrier(struct tty_port *port, bool val)
clear_bit(TTY_PORT_CHECK_CD, &port->iflags);
}
+static inline bool tty_port_suspended(struct tty_port *port)
+{
+ return test_bit(TTY_PORT_SUSPENDED, &port->iflags);
+}
+
+static inline void tty_port_set_suspended(struct tty_port *port, bool val)
+{
+ if (val)
+ set_bit(TTY_PORT_SUSPENDED, &port->iflags);
+ else
+ clear_bit(TTY_PORT_SUSPENDED, &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);