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/usb/serial/mxuport.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/usb/serial/mxuport.c')
| -rw-r--r-- | drivers/usb/serial/mxuport.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/serial/mxuport.c b/drivers/usb/serial/mxuport.c index 31a8b47f1ac6..3722d6c1ba77 100644 --- a/drivers/usb/serial/mxuport.c +++ b/drivers/usb/serial/mxuport.c @@ -503,7 +503,7 @@ static void mxuport_process_read_urb_demux_data(struct urb *urb) return; } - if (test_bit(ASYNCB_INITIALIZED, &demux_port->port.flags)) { + if (tty_port_initialized(&demux_port->port)) { ch = data + HEADER_SIZE; mxuport_process_read_urb_data(demux_port, ch, rcv_len); } else { @@ -544,7 +544,7 @@ static void mxuport_process_read_urb_demux_event(struct urb *urb) } demux_port = serial->port[rcv_port]; - if (test_bit(ASYNCB_INITIALIZED, &demux_port->port.flags)) { + if (tty_port_initialized(&demux_port->port)) { ch = data + HEADER_SIZE; rcv_event = get_unaligned_be16(data + 2); mxuport_process_read_urb_event(demux_port, ch, @@ -1339,7 +1339,7 @@ static int mxuport_resume(struct usb_serial *serial) for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; - if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) + if (!tty_port_initialized(&port->port)) continue; r = usb_serial_generic_write_start(port, GFP_NOIO); |