[PATCH 3/3] serial: tegra-tcu: Use uart_xmit_advance(), fixes icount.tx accounting
From: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Date: 2022-08-25 09:17:49
Also in:
linux-tegra, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Tx'ing does not correctly account Tx'ed characters into icount.tx.
Using uart_xmit_advance() fixes the problem.
Fixes: 2d908b38d409 ("serial: Add Tegra Combined UART driver")
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
drivers/tty/serial/tegra-tcu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/tegra-tcu.c b/drivers/tty/serial/tegra-tcu.c
index 4877c54c613d..889b701ba7c6 100644
--- a/drivers/tty/serial/tegra-tcu.c
+++ b/drivers/tty/serial/tegra-tcu.c@@ -101,7 +101,7 @@ static void tegra_tcu_uart_start_tx(struct uart_port *port) break; tegra_tcu_write(tcu, &xmit->buf[xmit->tail], count); - xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1); + uart_xmit_advance(port, count); } uart_write_wakeup(port);
--
2.30.2