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tty: Replace ASYNC_CHECK_CD and update atomically

Browse source 
Replace ASYNC_CHECK_CD bit in the tty_port::flags field with
TTY_PORT_CHECK_CD bit in the tty_port::iflags field. Introduce helpers
tty_port_set_check_carrier() and tty_port_check_carrier() to abstract
the atomic bit ops.

Signed-off-by: Peter Hurley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Peter Hurley 2016-04-09 17:53:23 -07:00 • committed by Greg Kroah-Hartman
commit 2d68655d15
13 changed files with 39 additions and 64 deletions
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4
net/irda/ircomm/ircomm_tty.c
View file

@ -999,7 +999,7 @@ void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self)
if (status & IRCOMM_DCE_DELTA_ANY) {
/*wake_up_interruptible(&self->delta_msr_wait);*/
}
if ((self->port.flags & ASYNC_CHECK_CD) && (status & IRCOMM_DELTA_CD)) {
if (tty_port_check_carrier(&self->port) && (status & IRCOMM_DELTA_CD)) {
pr_debug("%s(), ircomm%d CD now %s...\n", __func__ , self->line,
(status & IRCOMM_CD) ? "on" : "off");
@ -1255,7 +1255,7 @@ static void ircomm_tty_line_info(struct ircomm_tty_cb *self, struct seq_file *m)
seq_printf(m, "%cASYNC_CTS_FLOW", sep);
sep = '|';
}
if (self->port.flags & ASYNC_CHECK_CD) {
if (tty_port_check_carrier(&self->port)) {
seq_printf(m, "%cASYNC_CHECK_CD", sep);
sep = '|';
}

2
net/irda/ircomm/ircomm_tty_attach.c
View file

@ -968,7 +968,7 @@ static int ircomm_tty_state_ready(struct ircomm_tty_cb *self,
ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH);
ircomm_tty_start_watchdog_timer(self, 3*HZ);
if (self->port.flags & ASYNC_CHECK_CD) {
if (tty_port_check_carrier(&self->port)) {
/* Drop carrier */
self->settings.dce = IRCOMM_DELTA_CD;
ircomm_tty_check_modem_status(self);

5
net/irda/ircomm/ircomm_tty_ioctl.c
View file

@ -96,10 +96,7 @@ static void ircomm_tty_change_speed(struct ircomm_tty_cb *self,
} else {
self->settings.flow_control &= ~IRCOMM_RTS_CTS_IN;
}
if (cflag & CLOCAL)
self->port.flags &= ~ASYNC_CHECK_CD;
else
self->port.flags |= ASYNC_CHECK_CD;
tty_port_set_check_carrier(&self->port, ~cflag & CLOCAL);
#if 0
/*
* Set up parity check flag