From: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com
commit e1bfdbc7daca171c74a577b3dd0b36d76bb0ffcc upstream.
The XON1/XOFF1 character registers are at offset 0xa0 and 0xa8 respectively, so we cannot use the definition in serial_port.h.
Fixes: bdbd0a7f8f03 ("serial: 8250-mtk: modify baudrate setting") Signed-off-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20220427132328.228297-4-angelogioacchino.delregno@... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/8250/8250_mtk.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/tty/serial/8250/8250_mtk.c +++ b/drivers/tty/serial/8250/8250_mtk.c @@ -54,6 +54,9 @@ #define MTK_UART_TX_TRIGGER 1 #define MTK_UART_RX_TRIGGER MTK_UART_RX_SIZE
+#define MTK_UART_XON1 40 /* I/O: Xon character 1 */ +#define MTK_UART_XOFF1 42 /* I/O: Xoff character 1 */ + #ifdef CONFIG_SERIAL_8250_DMA enum dma_rx_status { DMA_RX_START = 0, @@ -275,8 +278,8 @@ static void mtk8250_set_flow_ctrl(struct (serial_in(up, MTK_UART_EFR) & (~(MTK_UART_EFR_HW_FC | MTK_UART_EFR_SW_FC_MASK))));
- serial_out(up, UART_XON1, START_CHAR(port->state->port.tty)); - serial_out(up, UART_XOFF1, STOP_CHAR(port->state->port.tty)); + serial_out(up, MTK_UART_XON1, START_CHAR(port->state->port.tty)); + serial_out(up, MTK_UART_XOFF1, STOP_CHAR(port->state->port.tty)); serial_out(up, UART_LCR, lcr); mtk8250_disable_intrs(up, MTK_UART_IER_CTSI|MTK_UART_IER_RTSI); mtk8250_enable_intrs(up, MTK_UART_IER_XOFFI);