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authorPeter Hurley <peter@hurleysoftware.com>2016-04-10 03:53:23 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-30 19:26:55 +0300
commit2d68655d15bc99981394f7caa769a14b03cac131 (patch)
treea61f1f9ffe92c21ff69fdd3f09c8f921f0670fcf /drivers/tty/synclink.c
parent807c8d81f4ec441241cafa3034c58df721fee869 (diff)
downloadlinux-2d68655d15bc99981394f7caa769a14b03cac131.tar.xz
tty: Replace ASYNC_CHECK_CD and update atomically
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 <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/synclink.c')
-rw-r--r--drivers/tty/synclink.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index b55f8468cde5..b67b54a800bb 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -1340,7 +1340,7 @@ static void mgsl_isr_io_pin( struct mgsl_struct *info )
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
- if ( (info->port.flags & ASYNC_CHECK_CD) &&
+ if (tty_port_check_carrier(&info->port) &&
(status & MISCSTATUS_DCD_LATCHED) ) {
if ( debug_level >= DEBUG_LEVEL_ISR )
printk("%s CD now %s...", info->device_name,
@@ -1967,11 +1967,7 @@ static void mgsl_change_params(struct mgsl_struct *info)
info->timeout += HZ/50; /* Add .02 seconds of slop */
tty_port_set_cts_flow(&info->port, cflag & CRTSCTS);
-
- if (cflag & CLOCAL)
- info->port.flags &= ~ASYNC_CHECK_CD;
- else
- info->port.flags |= ASYNC_CHECK_CD;
+ tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL);
/* process tty input control flags */