linux-kernel - Re: [PATCH v2] net: fec: limit register access on i.MX6UL

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Message-ID: <20221025160800.4eda6f50@kernel.org>
Date:   Tue, 25 Oct 2022 16:08:00 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Andrew Lunn <andrew@...n.ch>, Juergen Borleis <jbe@...gutronix.de>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: Re: [PATCH v2] net: fec: limit register access on i.MX6UL

On Tue, 25 Oct 2022 14:49:45 +0200 Andrew Lunn wrote:
> On Mon, Oct 24, 2022 at 10:05:52AM +0200, Juergen Borleis wrote:
> > Using 'ethtool -d […]' on an i.MX6UL leads to a kernel crash:
> > 
> >    Unhandled fault: external abort on non-linefetch (0x1008) at […]
> > 
> > due to this SoC has less registers in its FEC implementation compared to other
> > i.MX6 variants. Thus, a run-time decision is required to avoid access to
> > non-existing registers.
> > 
> > Signed-off-by: Juergen Borleis <jbe@...gutronix.de>  
> 
> Reviewed-by: Andrew Lunn <andrew@...n.ch>

What would be the right Fixes tag for this? This one perhaps?

Fixes: a51d3ab50702 ("net: fec: use a more proper compatible string for i.MX6UL type device")