system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-07 20:05:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse source 
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 6f81fdded0
commit e1bfdbc7da
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/tty/serial/8250/8250_mtk.c
View file

@ -57,6 +57,9 @@
#define MTK_UART_FEATURE_SEL 39 /* Feature Selection register */
#define MTK_UART_FEAT_NEWRMAP BIT(0) /* Use new register map */
#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,
@ -278,8 +281,8 @@ 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);