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author | 2016-04-09 17:53:23 -0700 | |
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committer | 2016-04-30 09:26:55 -0700 | |
commit | 2d68655d15bc99981394f7caa769a14b03cac131 (patch) | |
tree | a61f1f9ffe92c21ff69fdd3f09c8f921f0670fcf /include/linux/tty.h | |
parent | tty: Replace ASYNC_NORMAL_ACTIVE bit and update atomically (diff) | |
download | linux-2d68655d15bc99981394f7caa769a14b03cac131.tar.gz linux-2d68655d15bc99981394f7caa769a14b03cac131.tar.bz2 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/linux/tty.h')
-rw-r--r-- | include/linux/tty.h | 13 |
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); |