diff options
Diffstat (limited to 'recipes-kernel/linux/linux-at91-5.4.243/mtcdt/linux-5.4-reserve-5-bit-serial-for-multidrop.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-at91-5.4.243/mtcdt/linux-5.4-reserve-5-bit-serial-for-multidrop.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-at91-5.4.243/mtcdt/linux-5.4-reserve-5-bit-serial-for-multidrop.patch b/recipes-kernel/linux/linux-at91-5.4.243/mtcdt/linux-5.4-reserve-5-bit-serial-for-multidrop.patch new file mode 100644 index 0000000..33f8ecd --- /dev/null +++ b/recipes-kernel/linux/linux-at91-5.4.243/mtcdt/linux-5.4-reserve-5-bit-serial-for-multidrop.patch @@ -0,0 +1,31 @@ +From 1edc302f56b57512a99d6c21e1ddb85a89d16045 Mon Sep 17 00:00:00 2001 +From: Andrii Pientsov <andrii.pientsov@globallogic.com> +Date: Mon, 22 Nov 2021 12:03:15 +0200 +Subject: [PATCH] [PATCH] linux-5.4-reserve-5-bit-serial-for-multidrop + +--- + drivers/tty/serial/atmel_serial.c | 5 ++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c +index ea0215a0f4a4..28d4a92c0d63 100644 +--- a/drivers/tty/serial/atmel_serial.c ++++ b/drivers/tty/serial/atmel_serial.c +@@ -2158,10 +2158,13 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, + + baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16); + ++ mdrop = 0; + /* byte size */ + switch (termios->c_cflag & CSIZE) { + case CS5: +- mode |= ATMEL_US_CHRL_5; ++ mode |= ATMEL_US_PAR_MULTI_DROP; ++ mdrop = ATMEL_US_SENDA; ++ printk(KERN_INFO "termios: Setting Atmel Multi-Drop serial"); + break; + case CS6: + mode |= ATMEL_US_CHRL_6; +-- +2.25.1 + |