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| author | Peter Hurley <peter@hurleysoftware.com> | 2016-04-09 17:53:25 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | d41861ca19c9e96f12a4f1ebbc8255d00909a232 (patch) | |
| tree | 4b09c15500d404b0b375469dd673f0bc8fd05f5f /drivers/ipack | |
| parent | 80f02d5424301bf4df195d09b1a664f394435851 (diff) | |
| download | linux-d41861ca19c9e96f12a4f1ebbc8255d00909a232.tar.gz linux-d41861ca19c9e96f12a4f1ebbc8255d00909a232.tar.bz2 linux-d41861ca19c9e96f12a4f1ebbc8255d00909a232.zip | |
tty: Replace ASYNC_INITIALIZED bit and update atomically
Replace ASYNC_INITIALIZED bit in the tty_port::flags field with
TTY_PORT_INITIALIZED bit in the tty_port::iflags field. Introduce helpers
tty_port_set_initialized() and tty_port_initialized() to abstract
atomic bit ops.
Note: the transforms for test_and_set_bit() and test_and_clear_bit()
are unnecessary as the state transitions are already mutually exclusive;
the tty lock prevents concurrent open/close/hangup.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/ipack')
| -rw-r--r-- | drivers/ipack/devices/ipoctal.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c index 035d5449227e..75dd15d66df6 100644 --- a/drivers/ipack/devices/ipoctal.c +++ b/drivers/ipack/devices/ipoctal.c @@ -629,8 +629,7 @@ static void ipoctal_hangup(struct tty_struct *tty) tty_port_hangup(&channel->tty_port); ipoctal_reset_channel(channel); - - clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags); + tty_port_set_initialized(&channel->tty_port, 0); wake_up_interruptible(&channel->tty_port.open_wait); } @@ -642,7 +641,7 @@ static void ipoctal_shutdown(struct tty_struct *tty) return; ipoctal_reset_channel(channel); - clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags); + tty_port_set_initialized(&channel->tty_port, 0); } static void ipoctal_cleanup(struct tty_struct *tty) |