linux-kernel - Re: [REGRESSION] tg3 is broken since 6.13-rc1

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Message-ID: <CALs4sv2DgtkcWtMSsMiP9VLW98+5T9hz13j+O3qnqKYce6G+qw@mail.gmail.com>
Date: Thu, 8 May 2025 09:40:08 +0530
From: Pavan Chebbi <pavan.chebbi@...adcom.com>
To: Rui Salvaterra <rsalvaterra@...il.com>
Cc: mchan@...adcom.com, kuba@...nel.org, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION] tg3 is broken since 6.13-rc1

Hi Rui,

On Wed, May 7, 2025 at 9:44 PM Rui Salvaterra <rsalvaterra@...il.com> wrote:
>
> Hi, Pavan,
>
>
> On Mon, 9 Dec 2024 at 16:30, Pavan Chebbi <pavan.chebbi@...adcom.com> wrote:
> >
> > Thanks Rui for the report. Sorry, I did not expect this side effect.
> > I will check and post a fix/revert patch.
>
> Any news about this? The patch you sent me off-list is most definitely
> required for my machine's tg3-supported Ethernet controller to work at
> all. I reverted it and did a quick test build, the result being...
>

I am trying to find out how the current fix that is in the tree is
working out for the original bug reporter.
He is yet to get back. But I do understand, irrespective of that
finding, you have a problem that is affecting you.
I just don't know why you need the regular DMA mask also to be forced
32b on your setup.
I will check again with the original reporter and discuss with my team
and try to give a solution.
Can you please mention your model and the make again? Let me see if I
can find one in our lab or near me.

> rui@...pymeal:~$ uname -a
> Linux happymeal 6.15.0-rc5+ #169 SMP PREEMPT Wed May  7 15:05:44 WEST
> 2025 x86_64 x86_64 x86_64 GNU/Linux
> rui@...pymeal:~$ dmesg | grep tg3
> [    1.226623] tg3 0000:01:00.0: Unable to obtain 64 bit DMA for
> consistent allocations
> [    1.226718] tg3 0000:01:00.0: probe with driver tg3 failed with error -5
> rui@...pymeal:~$
>
>
> Kind regards,
>
> Rui Salvaterra

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