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authorPeter Hurley <peter@hurleysoftware.com>2016-04-09 17:53:25 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-30 09:26:55 -0700
commitd41861ca19c9e96f12a4f1ebbc8255d00909a232 (patch)
tree4b09c15500d404b0b375469dd673f0bc8fd05f5f /drivers/ipack
parent80f02d5424301bf4df195d09b1a664f394435851 (diff)
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.c5
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)

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