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Date:   Thu, 16 Jan 2020 20:39:55 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Alistair Delva <adelva@google.com>
Cc:     stable@vger.kernel.org, kernel-team@android.com,
        Lingfeng Yang <lfy@google.com>, kraxel@redhat.com
Subject: Re: Please revert "drm/virtio: switch virtio_gpu_wait_ioctl() to gem
 helper." from 5.4-stable
Message-ID: <20200116193955.GA1024193@kroah.com>
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On Thu, Jan 16, 2020 at 08:20:11AM -0800, Alistair Delva wrote:
> (Sorry if this is noise and has already been reported)
> 
> After updating to 5.4.7 we noticed that virtio_gpu's wait ioctl
> stopped working correctly.
> 
> It looks like 29cf12394c05 ("drm/virtio: switch
> virtio_gpu_wait_ioctl() to gem helper.") was picked up automatically,
> but it depends on 889165ad6190 ("drm/virtio: pass gem reservation
> object to ttm init") from earlier in Gerd's series in Linus's tree,
> which was not picked up.
> 
> (This patch doesn't seem like compelling stable material so maybe we
> should revert it.)

Now reverted, thanks for the report.

greg k-h