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Subject[PATCH 3/3] serial: pch_uart: CIRC_CNT_TO_END() is enough
Date
Testing also CIRC_CNT() with CIRC_CNT_TO_END() is unnecessary because
to latter alone covers all necessary cases.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
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 8a9065e4a903..116a2e76093d 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);
--
2.30.2
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