netdev - Re: [PATCH net-next 1/1] net: wwan: t7xx: Add port for modem logging

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Message-ID: <20220524110426.5f339585@kernel.org>
Date:   Tue, 24 May 2022 11:04:26 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     "moises.veleta" <moises.veleta@...ux.intel.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        johannes@...solutions.net, ryazanov.s.a@...il.com,
        loic.poulain@...aro.org, m.chetan.kumar@...el.com,
        chandrashekar.devegowda@...el.com, linuxwwan@...el.com,
        haijun.liu@...iatek.com, andriy.shevchenko@...ux.intel.com,
        ilpo.jarvinen@...ux.intel.com, ricardo.martinez@...ux.intel.com,
        sreehari.kancharla@...el.com, dinesh.sharma@...el.com
Subject: Re: [PATCH net-next 1/1] net: wwan: t7xx: Add port for modem
 logging

On Mon, 23 May 2022 22:11:00 -0700 moises.veleta wrote:
> Is the issue with using the debugfs to send random data to the modem an 
> issue with validation?
> If so, what if the modem itself is validating the input string would 
> that suffice to allow this debugfs control port to act as the medium 
> between user space applications and the modem? Leaving the driver blind 
> to that process.
> Or is it preferable to have the driver do the validation on the user 
> space input to the modem?

Yes, the driver is not supposed to be blind to the process.