linux-kernel - Re: [PATCH] drm/amdgpu: Drop redundant pci_enable_pcie_error

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Message-ID: <CADnq5_PffomFtJkVmOzFQnCk=Oqv9CmTZjKVm0oZoi94oq4KMQ@mail.gmail.com>
Date:   Wed, 8 Mar 2023 09:53:47 -0500
From:   Alex Deucher <alexdeucher@...il.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Pan@...edesktop.org, Xinhui <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amdgpu: Drop redundant pci_enable_pcie_error_reporting()

Applied.  Thanks!

Alex

On Tue, Mar 7, 2023 at 3:22 PM Bjorn Helgaas <helgaas@...nel.org> wrote:
>
> From: Bjorn Helgaas <bhelgaas@...gle.com>
>
> pci_enable_pcie_error_reporting() enables the device to send ERR_*
> Messages.  Since f26e58bf6f54 ("PCI/AER: Enable error reporting when AER is
> native"), the PCI core does this for all devices during enumeration, so the
> driver doesn't need to do it itself.
>
> Remove the redundant pci_enable_pcie_error_reporting() call from the
> driver.
>
> Note that this only controls ERR_* Messages from the device.  An ERR_*
> Message may cause the Root Port to generate an interrupt, depending on the
> AER Root Error Command register managed by the AER service driver.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h        | 1 -
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 --
>  2 files changed, 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 164141bc8b4a..208cebb40232 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -50,7 +50,6 @@
>  #include <linux/hashtable.h>
>  #include <linux/dma-fence.h>
>  #include <linux/pci.h>
> -#include <linux/aer.h>
>
>  #include <drm/ttm/ttm_bo.h>
>  #include <drm/ttm/ttm_placement.h>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index c4a4e2fe6681..a5151e83a3f7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -3773,8 +3773,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
>                 }
>         }
>
> -       pci_enable_pcie_error_reporting(adev->pdev);
> -
>         /* Post card if necessary */
>         if (amdgpu_device_need_post(adev)) {
>                 if (!adev->bios) {
> --
> 2.25.1
>