linux-kernel - Re: [PATCH] net: bcmgenet: Revert "Use stronger register read/writes to assure ordering"

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Message-ID: <53a984cb43cdeaa20a7f5416e970b28813b72779.camel@redhat.com>
Date:   Thu, 14 Apr 2022 09:15:29 +0200
From:   Paolo Abeni <pabeni@...hat.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Jeremy Linton <jeremy.linton@....com>, netdev@...r.kernel.org
Cc:     opendmb@...il.com, davem@...emloft.net, kuba@...nel.org,
        pbrobinson@...il.com, bcm-kernel-feedback-list@...adcom.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: bcmgenet: Revert "Use stronger register
 read/writes to assure ordering"

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