From 862526523e71a96e11ae48e081c424fdb1b50011 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 3 May 2022 10:08:06 +0200 Subject: [PATCH] serial: pch: remove xmit circ_buf size double check 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 Link: https://lore.kernel.org/r/20220503080808.28332-4-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman --- 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 a90bdff609089..ae1d6b641253a 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; -- 2.30.2