linux-kernel - Re: [PATCH] dmaengine: idxd: Move DSA/IAA device IDs to IDXD driver

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Message-ID: <Zw1gL22McDhFfgnk@vaman>
Date: Mon, 14 Oct 2024 23:47:19 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Fenghua Yu <fenghua.yu@...el.com>
Cc: Dave Jiang <dave.jiang@...el.com>, dmaengine@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: idxd: Move DSA/IAA device IDs to IDXD driver

On 04-10-24, 12:52, Fenghua Yu wrote:
> Since the DSA/IAA device IDs are only used by the IDXD driver, there is
> no need to define them as public IDs. Move their definitions to the IDXD
> driver to limit their scope. This change helps reduce unnecessary
> exposure of the device IDs in the global space, making the codebase
> cleaner and better encapsulated.

That is good

> 
> There is no functional change.

Ok

> 
> Fixes: 4fecf944c051 ("dmaengine: idxd: Add new DSA and IAA device IDs for Diamond Rapids platform")
> Fixes: f91f2a9879cc ("dmaengine: idxd: Add a new DSA device ID for Granite Rapids-D platform")

How is this a fix?

> Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
> ---
>  drivers/dma/idxd/registers.h | 4 ++++
>  include/linux/pci_ids.h      | 3 ---
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h
> index e16dbf9ab324..c426511f2104 100644
> --- a/drivers/dma/idxd/registers.h
> +++ b/drivers/dma/idxd/registers.h
> @@ -6,6 +6,10 @@
>  #include <uapi/linux/idxd.h>
>  
>  /* PCI Config */
> +#define PCI_DEVICE_ID_INTEL_DSA_GNRD	0x11fb
> +#define PCI_DEVICE_ID_INTEL_DSA_DMR	0x1212
> +#define PCI_DEVICE_ID_INTEL_IAA_DMR	0x1216
> +
>  #define DEVICE_VERSION_1		0x100
>  #define DEVICE_VERSION_2		0x200
>  
> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> index 4cf6aaed5f35..e4bddb927795 100644
> --- a/include/linux/pci_ids.h
> +++ b/include/linux/pci_ids.h
> @@ -2709,9 +2709,6 @@
>  #define PCI_DEVICE_ID_INTEL_82815_MC	0x1130
>  #define PCI_DEVICE_ID_INTEL_82815_CGC	0x1132
>  #define PCI_DEVICE_ID_INTEL_SST_TNG	0x119a
> -#define PCI_DEVICE_ID_INTEL_DSA_GNRD	0x11fb
> -#define PCI_DEVICE_ID_INTEL_DSA_DMR	0x1212
> -#define PCI_DEVICE_ID_INTEL_IAA_DMR	0x1216
>  #define PCI_DEVICE_ID_INTEL_82092AA_0	0x1221
>  #define PCI_DEVICE_ID_INTEL_82437	0x122d
>  #define PCI_DEVICE_ID_INTEL_82371FB_0	0x122e
> -- 
> 2.37.1

-- 
~Vinod