linux-kernel - Re: Regression in 5.19.0: USB errors during boot

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Date:   Sun, 21 Aug 2022 16:26:10 +0200
From:   Christoph Hellwig <hch@....de>
To:     "Alan J. Wylie" <alan@...ie.me.uk>
Cc:     Christoph Hellwig <hch@....de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: Regression in 5.19.0: USB errors during boot

On Sun, Aug 21, 2022 at 09:21:22AM +0100, Alan J. Wylie wrote:
> Comparing with another AMD system that doesn't show the problem,
> I see that CONFIG_GART_IOMMU is only set on the one with the problem.
> 
> The configs have just had "make oldconfig" run on them for years, I
> have no idea why one has it set.
> 
> Clearing it fixes the problem!

Thanks for confirming my suspicion.  I'd still like to fix the issue
with CONFIG_GART_IOMMU enabled once I've tracked it down.  Would you
be willing to test patches?