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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/tty/isicom.c
parent80f02d5424301bf4df195d09b1a664f394435851 (diff)
downloadlinux-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.c6
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;