openwrt/target/linux/mediatek/patches-5.15/410-bt-mtk-serial-fix.patch
John Audia 590aa0ca51 kernel: bump 5.15 to 5.15.80
Manually rebase:
   pending-5.15/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
   ath79/patches-5.15/910-unaligned_access_hacks.patch

All other patches automatically rebased

Build system: x86_64
Build-tested: bcm2711/RPi4B
Run-tested: bcm2711/RPi4B

Signed-off-by: John Audia <therealgraysky@proton.me>
2022-11-27 13:18:29 +01:00

34 lines
1.1 KiB
Diff

--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -85,6 +85,7 @@ struct serial8250_config {
#define UART_CAP_MINI BIT(17) /* Mini UART on BCM283X family lacks:
* STOP PARITY EPAR SPAR WLEN5 WLEN6
*/
+#define UART_CAP_NMOD (1 << 18) /* UART doesn't do termios */
#define UART_BUG_QUOT BIT(0) /* UART has buggy quot LSB */
#define UART_BUG_TXEN BIT(1) /* UART has buggy TX IIR status */
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -288,7 +288,7 @@ static const struct serial8250_config ua
.tx_loadsz = 16,
.fcr = UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
- .flags = UART_CAP_FIFO,
+ .flags = UART_CAP_FIFO | UART_CAP_NMOD,
},
[PORT_NPCM] = {
.name = "Nuvoton 16550",
@@ -2756,6 +2756,11 @@ serial8250_do_set_termios(struct uart_po
unsigned long flags;
unsigned int baud, quot, frac = 0;
+ if (up->capabilities & UART_CAP_NMOD) {
+ termios->c_cflag = 0;
+ return;
+ }
+
if (up->capabilities & UART_CAP_MINI) {
termios->c_cflag &= ~(CSTOPB | PARENB | PARODD | CMSPAR);
if ((termios->c_cflag & CSIZE) == CS5 ||