[Blackfin] serial driver: Fix bug Poll RTS/CTS status in DMA mode as well
https://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3858
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index a07df53..af866ab 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -53,7 +53,6 @@
#ifdef CONFIG_SERIAL_BFIN_DMA
static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart);
#else
-static void bfin_serial_do_work(struct work_struct *work);
static void bfin_serial_tx_chars(struct bfin_serial_port *uart);
#endif
@@ -372,8 +371,9 @@
return IRQ_HANDLED;
}
+#endif
-
+#ifdef CONFIG_SERIAL_BFIN_CTSRTS
static void bfin_serial_do_work(struct work_struct *work)
{
struct bfin_serial_port *uart = container_of(work, struct bfin_serial_port, cts_workqueue);
@@ -607,22 +607,17 @@
{
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
unsigned int status;
-# ifdef CONFIG_SERIAL_BFIN_DMA
struct uart_info *info = uart->port.info;
struct tty_struct *tty = info->tty;
status = bfin_serial_get_mctrl(&uart->port);
+ uart_handle_cts_change(&uart->port, status & TIOCM_CTS);
if (!(status & TIOCM_CTS)) {
tty->hw_stopped = 1;
+ schedule_work(&uart->cts_workqueue);
} else {
tty->hw_stopped = 0;
}
-# else
- status = bfin_serial_get_mctrl(&uart->port);
- uart_handle_cts_change(&uart->port, status & TIOCM_CTS);
- if (!(status & TIOCM_CTS))
- schedule_work(&uart->cts_workqueue);
-# endif
#endif
}
@@ -939,10 +934,9 @@
bfin_serial_ports[i].rx_dma_channel =
bfin_serial_resource[i].uart_rx_dma_channel;
init_timer(&(bfin_serial_ports[i].rx_dma_timer));
-#else
- INIT_WORK(&bfin_serial_ports[i].cts_workqueue, bfin_serial_do_work);
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
+ INIT_WORK(&bfin_serial_ports[i].cts_workqueue, bfin_serial_do_work);
bfin_serial_ports[i].cts_pin =
bfin_serial_resource[i].uart_cts_pin;
bfin_serial_ports[i].rts_pin =