From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Binbin Zhou <zhoubinbin@loongson.cn>
Cc: Binbin Zhou <zhoubb.aaron@gmail.com>,
Huacai Chen <chenhuacai@loongson.cn>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Jiri Slaby <jirislaby@kernel.org>,
Haowei Zheng <zhenghaowei@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>,
Xuerui Wang <kernel@xen0n.name>,
loongarch@lists.linux.dev, devicetree@vger.kernel.org,
linux-serial@vger.kernel.org
Subject: Re: [PATCH v5 2/3] serial: 8250: Add Loongson uart driver support
Date: Wed, 24 Sep 2025 12:22:44 +0200 [thread overview]
Message-ID: <2025092428-glade-monologue-3663@gregkh> (raw)
In-Reply-To: <9823e7afe713450e210dab9dba6fa18683dc1fe0.1758676290.git.zhoubinbin@loongson.cn>
On Wed, Sep 24, 2025 at 02:29:37PM +0800, Binbin Zhou wrote:
> --- a/include/uapi/linux/serial_core.h
> +++ b/include/uapi/linux/serial_core.h
> @@ -31,6 +31,7 @@
> #define PORT_ALTR_16550_F128 28 /* Altera 16550 UART with 128 FIFOs */
> #define PORT_RT2880 29 /* Ralink RT2880 internal UART */
> #define PORT_16550A_FSL64 30 /* Freescale 16550 UART with 64 FIFOs */
> +#define PORT_LOONGSON 31 /* Loongson 16550 UART */
Why does userspace need to have this value exported?
thanks,
greg k-h
next prev parent reply other threads:[~2025-09-24 10:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 6:29 [PATCH v5 0/3] uart: Introduce uart driver for the Loongson family Binbin Zhou
2025-09-24 6:29 ` [PATCH v5 1/3] dt-bindings: serial: 8250: Add Loongson uart compatible Binbin Zhou
2025-09-24 19:19 ` Conor Dooley
2025-09-24 6:29 ` [PATCH v5 2/3] serial: 8250: Add Loongson uart driver support Binbin Zhou
2025-09-24 10:22 ` Greg Kroah-Hartman [this message]
2025-09-28 2:48 ` Binbin Zhou
2025-09-29 6:19 ` Jiri Slaby
2025-09-30 3:03 ` Binbin Zhou
2025-10-08 12:16 ` Greg Kroah-Hartman
2025-09-29 6:26 ` Jiri Slaby
2025-09-30 3:07 ` Binbin Zhou
2025-09-30 12:01 ` Ilpo Järvinen
2025-09-30 11:58 ` Ilpo Järvinen
2025-10-09 2:52 ` Binbin Zhou
2025-10-09 11:46 ` Ilpo Järvinen
2025-09-24 6:29 ` [PATCH v5 3/3] LoongArch: dts: Add uart new compatible string Binbin Zhou
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