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Message-ID: <9f934dc7-bfd6-4f3f-a52c-a33f7a662cae@gmail.com>
Date: Sat, 15 Jun 2024 04:46:11 +0300
From: Sergey Ryazanov <ryazanov.s.a@...il.com>
To: Vanillan Wang <songjinjian@...mail.com>
Cc: pabeni@...hat.com, kuba@...nel.org, edumazet@...gle.com,
 davem@...emloft.net, johannes@...solutions.net, loic.poulain@...aro.org,
 ricardo.martinez@...ux.intel.com, m.chetan.kumar@...ux.intel.com,
 chandrashekar.devegowda@...el.com, haijun.liu@...iatek.com,
 chiranjeevi.rapolu@...ux.intel.com, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org, Jinjian Song <jinjian.song@...ocom.com>
Subject: Re: [net-next v1] net: wwan: t7xx: Add debug port

On 14.06.2024 12:49, Vanillan Wang wrote:
> From: Jinjian Song <jinjian.song@...ocom.com>
> 
> Add support for userspace to switch on the debug port(ADB,MIPC).
>   - ADB port: /dev/ccci_sap_adb
>   - MIPC port: /dev/ttyMIPC0

NAK

The WWAN subsystem was purposely introducted to get rid of this mess of 
char devices and their implementation in drivers. If you want to export 
a port, which type is not available in the WWAN subsystem, then 
introduce a new port to the subsystem and then register it from a driver.

--
Sergey

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