tty: Replace ASYNC_CTS_FLOW bit and update atomically
Replace ASYNC_CTS_FLOW bit in the tty_port::flags field with
TTY_PORT_CTS_FLOW bit in the tty_port::iflags field. Add
tty_port_set_cts_flow() helper to abstract the atomic bit ops.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index 3768e5c..0e42901 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -1966,11 +1966,8 @@
}
info->timeout += HZ/50; /* Add .02 seconds of slop */
- if (cflag & CRTSCTS)
- info->port.flags |= ASYNC_CTS_FLOW;
- else
- info->port.flags &= ~ASYNC_CTS_FLOW;
-
+ tty_port_set_cts_flow(&info->port, cflag & CRTSCTS);
+
if (cflag & CLOCAL)
info->port.flags &= ~ASYNC_CHECK_CD;
else