[PATCH 1/3] serial: sh-sci: CIRC_CNT_TO_END() is enough
From: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Date: 2022-08-23 16:51:42
Also in:
lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
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/sh-sci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 0075a1420005..6d2f5a08ff1f 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c@@ -1408,9 +1408,7 @@ static void sci_dma_tx_work_fn(struct work_struct *work) head = xmit->head; tail = xmit->tail; buf = s->tx_dma_addr + (tail & (UART_XMIT_SIZE - 1)); - s->tx_dma_len = min_t(unsigned int, - CIRC_CNT(head, tail, UART_XMIT_SIZE), - CIRC_CNT_TO_END(head, tail, UART_XMIT_SIZE)); + s->tx_dma_len = CIRC_CNT_TO_END(head, tail, UART_XMIT_SIZE); if (!s->tx_dma_len) { /* Transmit buffer has been flushed */ spin_unlock_irq(&port->lock);
--
2.30.2