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serial: 8250_mtk: Fix register address for XON/XOFF character

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commit e1bfdbc7da upstream.

The XON1/XOFF1 character registers are at offset 0xa0 and 0xa8
respectively, so we cannot use the definition in serial_port.h.

Fixes: bdbd0a7f8f ("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@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
AngeloGioacchino Del Regno 2022-04-27 15:23:28 +02:00 committed by Greg Kroah-Hartman
parent 36723b9a2b
commit a75811da73
1 changed files with 5 additions and 2 deletions
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7
drivers/tty/serial/8250/8250_mtk.c
View file

@ -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 uart_8250_port *up, int mode)
(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);