Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <53a984cb43cdeaa20a7f5416e970b28813b72779.camel@redhat.com>
Subject: Re: [PATCH] net: bcmgenet: Revert "Use stronger register
 read/writes to assure ordering"
From:   Paolo Abeni <pabeni@redhat.com>
To:     Florian Fainelli <f.fainelli@gmail.com>,
        Jeremy Linton <jeremy.linton@arm.com>, netdev@vger.kernel.org
Cc:     opendmb@gmail.com, davem@davemloft.net, kuba@kernel.org,
        pbrobinson@gmail.com, bcm-kernel-feedback-list@broadcom.com,
        linux-kernel@vger.kernel.org
Date:   Thu, 14 Apr 2022 09:15:29 +0200
In-Reply-To: <3f4972d1-ace1-0260-16e6-84fd0f475273@gmail.com>
References: <20220412210420.1129430-1-jeremy.linton@arm.com>
         <3f4972d1-ace1-0260-16e6-84fd0f475273@gmail.com>
Content-Type: text/plain; charset="UTF-8"
User-Agent: Evolution 3.42.4 (3.42.4-2.fc35) 
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Wed, 2022-04-13 at 10:00 -0700, Florian Fainelli wrote:
> 
> On 4/12/2022 2:04 PM, Jeremy Linton wrote:
> > It turns out after digging deeper into this bug, that it was being
> > triggered by GCC12 failing to call the bcmgenet_enable_dma()
> > routine. Given that a gcc12 fix has been merged [1] and the genet
> > driver now works properly when built with gcc12, this commit should
> > be reverted.
> > 
> > [1]
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105160
> > https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=aabb9a261ef060cf24fd626713f1d7d9df81aa57
> > 
> > Fixes: 8d3ea3d402db ("net: bcmgenet: "Use stronger register read/writes to assure ordering")

For the records, there is a small typo in the above tag, I'll fix it
while applying the patch. No need to repost it.

Cheers,

Paolo