[PATCH 5/7] serial: pch: remove xmit circ_buf size double check

[Jiri Slaby]

One is in handle_tx() (as "min(xmit->head - xmit->tail, fifo_size))",
another one in pop_tx() (as uart_circ_empty(xmit)). So keep only the
latter.

This makes the code simpler and size variable is not needed now.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
 drivers/tty/serial/pch_uart.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index a90bdff60908..ae1d6b641253 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -839,9 +839,7 @@ static int dma_handle_rx(struct eg20t_port *priv)
 static unsigned int handle_tx(struct eg20t_port *priv)
 {
 	struct uart_port *port = &priv->port;
-	struct circ_buf *xmit = &port->state->xmit;
 	int fifo_size;
-	int size;
 	int tx_empty;
 
 	if (!priv->start_tx) {
@@ -862,10 +860,7 @@ static unsigned int handle_tx(struct eg20t_port *priv)
 		fifo_size--;
 	}
 
-	size = min(xmit->head - xmit->tail, fifo_size);
-	if (size < 0)
-		size = fifo_size;
-	if (size && pop_tx(priv, size))
+	if (fifo_size && pop_tx(priv, fifo_size))
 		tx_empty = 0;
 
 	priv->tx_empty = tx_empty;
-- 
2.36.0