netdev - Re: [PATCH v3 net-next 2/3] net: dsa: mv88e6xxx: shorten the locked section in mv88e6xxx_g1_atu_prob_irq_thread

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <540e6577f028c05c8ea39c2a09bce23e@kapio-technology.com>
Date:   Sat, 07 Jan 2023 10:44:33 +0100
From:   netdev@...io-technology.com
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 net-next 2/3] net: dsa: mv88e6xxx: shorten the locked
 section in mv88e6xxx_g1_atu_prob_irq_thread_fn()

On 2023-01-06 17:37, Vladimir Oltean wrote:
> On Fri, Jan 06, 2023 at 05:05:28PM +0100, Hans J. Schultz wrote:
>> As only the hardware access functions up til and including
>> mv88e6xxx_g1_atu_mac_read() called under the interrupt handler
>> need to take the chip lock, we release the chip lock after this call.
>> The follow up code that handles the violations can run without the
>> chip lock held.
>> In further patches, the violation handler function will even be
>> incompatible with having the chip lock held. This due to an AB/BA
>> ordering inversion with rtnl_lock().
>> 
>> Signed-off-by: Hans J. Schultz <netdev@...io-technology.com>
>> ---
> 
> Needs to compile without new warnings patch by patch.
> 
> ../drivers/net/dsa/mv88e6xxx/global1_atu.c: In function
> ‘mv88e6xxx_g1_atu_prob_irq_thread_fn’:
> ../drivers/net/dsa/mv88e6xxx/global1_atu.c:460:1: warning: label ‘out’
> defined but not used [-Wunused-label]
>   460 | out:
>       | ^~~
> ../drivers/net/dsa/mv88e6xxx/global1_atu.c:460:1: warning: unused label 
> 'out'

Can I fix it and resend the same version?