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/amiserial.c b/drivers/tty/amiserial.c
index e68208e..92717b0 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -727,11 +727,9 @@
info->IER &= ~UART_IER_MSI;
if (port->flags & ASYNC_HARDPPS_CD)
info->IER |= UART_IER_MSI;
- if (cflag & CRTSCTS) {
- port->flags |= ASYNC_CTS_FLOW;
+ tty_port_set_cts_flow(port, cflag & CRTSCTS);
+ if (cflag & CRTSCTS)
info->IER |= UART_IER_MSI;
- } else
- port->flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL)
port->flags &= ~ASYNC_CHECK_CD;
else {