linux-kernel - Re: [PATCH 0/5] Add the pci_get_base

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Date:   Thu, 28 Sep 2023 16:56:43 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Sui Jingfeng <sui.jingfeng@...ux.dev>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        nouveau@...ts.freedesktop.org, linux-pci@...r.kernel.org,
        alsa-devel@...a-project.org, Sui Jingfeng <suijingfeng@...ngson.cn>
Subject: Re: [PATCH 0/5] Add the pci_get_base_class() helper and use it

On Fri, Aug 25, 2023 at 02:27:09PM +0800, Sui Jingfeng wrote:
> From: Sui Jingfeng <suijingfeng@...ngson.cn>
> 
> There is no function that can be used to get all PCI(e) devices in a
> system by matching against its the PCI base class code only, while keep
> the sub-class code and the programming interface ignored. Therefore, add
> the pci_get_base_class() function to suit the need.
> 
> For example, if an application want to process all PCI(e) display devices
> in a system, it can achieve such goal by writing the code as following:
> 
>     pdev = NULL;
>     do {
>         pdev = pci_get_base_class(PCI_BASE_CLASS_DISPLAY, pdev);
>         if (!pdev)
>             break;
> 
>         do_something_for_pci_display_device(pdev);
>     } while (1);
> 
> Sui Jingfeng (5):
>   PCI: Add the pci_get_base_class() helper
>   ALSA: hda/intel: Use pci_get_base_class() to reduce duplicated code
>   drm/nouveau: Use pci_get_base_class() to reduce duplicated code
>   drm/amdgpu: Use pci_get_base_class() to reduce duplicated code
>   drm/radeon: Use pci_get_base_class() to reduce duplicated code
> 
>  drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 11 +++------
>  drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 20 ++++-----------
>  drivers/gpu/drm/nouveau/nouveau_acpi.c   | 11 +++------
>  drivers/gpu/drm/radeon/radeon_bios.c     | 20 ++++-----------
>  drivers/pci/search.c                     | 31 ++++++++++++++++++++++++
>  include/linux/pci.h                      |  5 ++++
>  sound/pci/hda/hda_intel.c                | 16 ++++--------
>  7 files changed, 59 insertions(+), 55 deletions(-)

Applied to pci/enumeration for v6.7, thanks.