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Message-ID: <3554a99d-339f-39f9-111d-040025096f97@linux.alibaba.com>
Date: Mon, 7 Aug 2023 16:41:30 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: Wenhua Lin <Wenhua.Lin@...soc.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Orson Zhai <orsonzhai@...il.com>,
Chunyan Zhang <zhang.lyra@...il.com>
Cc: linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
wenhua lin <wenhua.lin1994@...il.com>,
Xiongpeng Wu <xiongpeng.wu@...soc.com>
Subject: Re: [PATCH] serial: sprd: Support 12 uart ports
On 8/7/2023 4:07 PM, Wenhua Lin wrote:
> From: Wenhua Lin <wenhua.lin@...soc.com>
>
> Support 12 uart ports, which can solve the problem
> of insufficient uart ports.
This sounds incorrect to me.
If this is a software bug, please add a Fixes tag to backport for stable
kernels. If the change of the max ports is only avaliable on the new
SPRD serial hardware, you should ensure the change is
backward-compatibility with old hardware.
> Signed-off-by: Wenhua Lin <wenhua.lin@...soc.com>
> ---
> drivers/tty/serial/sprd_serial.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
> index b58f51296ace..2774df490899 100644
> --- a/drivers/tty/serial/sprd_serial.c
> +++ b/drivers/tty/serial/sprd_serial.c
> @@ -22,7 +22,7 @@
> #include <linux/tty_flip.h>
>
> /* device name */
> -#define UART_NR_MAX 8
> +#define UART_NR_MAX 12
> #define SPRD_TTY_NAME "ttyS"
> #define SPRD_FIFO_SIZE 128
> #define SPRD_DEF_RATE 26000000
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