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Date:   Wed, 3 Nov 2021 18:47:22 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Alex Deucher <alexander.deucher@amd.com>
Cc:     stable@vger.kernel.org, Yifan Zhang <yifan1.zhang@amd.com>,
        youling <youling257@gmail.com>, James Zhu <James.Zhu@amd.com>
Subject: Re: [PATCH] drm/amdkfd: fix boot failure when iommu is disabled in
 Picasso.
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References: <20211103145256.1359520-1-alexander.deucher@amd.com>
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On Wed, Nov 03, 2021 at 10:52:56AM -0400, Alex Deucher wrote:
> From: Yifan Zhang <yifan1.zhang@amd.com>
> 
> When IOMMU disabled in sbios and kfd in iommuv2 path, iommuv2
> init will fail. But this failure should not block amdgpu driver init.
> 
> Bug: https://bugzilla.kernel.org/show_bug.cgi?id=214859
> Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1770
> Reported-by: youling <youling257@gmail.com>
> Tested-by: youling <youling257@gmail.com>
> Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
> Reviewed-by: James Zhu <James.Zhu@amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> (cherry picked from commit afd18180c07026f94a80ff024acef5f4159084a4)
> Cc: stable@vger.kernel.org # 5.14.x
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ----
>  drivers/gpu/drm/amd/amdkfd/kfd_device.c    | 3 +++
>  2 files changed, 3 insertions(+), 4 deletions(-)

Now queued up, thanks.

greg k-h