From 1a9a59104646417ef2d71a7dcfc5243672c9d8e6 Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Tue, 23 Aug 2022 17:18:39 +0300 Subject: serial: pch_uart: CIRC_CNT_TO_END() is enough MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Testing also CIRC_CNT() with CIRC_CNT_TO_END() is unnecessary because to latter alone covers all necessary cases. Reviewed-by: Jiri Slaby Signed-off-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20220823141839.165244-3-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/pch_uart.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 11ba5df0618f..c59ce7886579 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -898,9 +898,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv) fifo_size--; } - bytes = min((int)CIRC_CNT(xmit->head, xmit->tail, - UART_XMIT_SIZE), CIRC_CNT_TO_END(xmit->head, - xmit->tail, UART_XMIT_SIZE)); + bytes = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE); if (!bytes) { dev_dbg(priv->port.dev, "%s 0 bytes return\n", __func__); pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_TX_INT); -- cgit v1.2.3