linux-kernel - Re: [PATCH] net: dsa: mv88e6xxx: add an error code check in mv88e6352_tai_event

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Date:   Fri, 20 Oct 2023 13:07:09 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Su Hui <suhui@...china.com>
Cc:     andrew@...n.ch, f.fainelli@...il.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        richardcochran@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] net: dsa: mv88e6xxx: add an error code check in
 mv88e6352_tai_event_work

On Fri, Oct 20, 2023 at 05:00:04PM +0800, Su Hui wrote:
> mv88e6xxx_tai_write() can return error code (-EOPNOTSUPP ...) if failed.
> So check the value of 'ret' after calling mv88e6xxx_tai_write().
> 
> Signed-off-by: Su Hui <suhui@...china.com>
> ---

mv88e6xxx_avb_ops :: tai_read() and tai_write() come in pairs for the
existing implementations. So, a missing tai_write() method also implies
a missing tai_read() and would have been caught by the previous call to
mv88e6xxx_tai_read() in this function.

But, ok.

Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>

This is a patch for net-next, as it doesn't fix any user-visible issue
and is just an improvement. For future changes, please note your
expectation regarding the target tree yourself, by formatting the patch
as "[PATCH net-next]".