diff options
| 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/tty/isicom.c | |
| parent | 80f02d5424301bf4df195d09b1a664f394435851 (diff) | |
| download | linux-d41861ca19c9e96f12a4f1ebbc8255d00909a232.tar.bz2 | |
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/tty/isicom.c')
| -rw-r--r-- | drivers/tty/isicom.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c index 0b2bae1b2d55..b70187b46d9d 100644 --- a/drivers/tty/isicom.c +++ b/drivers/tty/isicom.c @@ -438,8 +438,8 @@ static void isicom_tx(unsigned long _data) for (; count > 0; count--, port++) { /* port not active or tx disabled to force flow control */ - if (!(port->port.flags & ASYNC_INITIALIZED) || - !(port->status & ISI_TXOK)) + if (!tty_port_initialized(&port->port) || + !(port->status & ISI_TXOK)) continue; txcount = min_t(short, TX_SIZE, port->xmit_cnt); @@ -553,7 +553,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } port = card->ports + channel; - if (!(port->port.flags & ASYNC_INITIALIZED)) { + if (!tty_port_initialized(&port->port)) { outw(0x0000, base+0x04); /* enable interrupts */ spin_unlock(&card->card_lock); return IRQ_HANDLED; |