linux-kernel - Re: [PATCH net-next v7 7/9] net: hisi_femac: remove unused compatible strings

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Date: Fri, 1 Mar 2024 07:48:42 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: forbidden405@...look.com, Yisen Zhuang <yisen.zhuang@...wei.com>,
 Salil Mehta <salil.mehta@...wei.com>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Andrew Lunn <andrew@...n.ch>,
 Heiner Kallweit <hkallweit1@...il.com>, Russell King <linux@...linux.org.uk>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v7 7/9] net: hisi_femac: remove unused compatible
 strings

On 01/03/2024 04:36, Yang Xiwen via B4 Relay wrote:
> From: Yang Xiwen <forbidden405@...look.com>
> 
> It's hard to get the version number for each FEMAC core and it's unknown
> how the version can be used. Remove them until it's really needed.
> 
> While at it, remove SoC compatibles and only use fallback compatible.
> 
> Signed-off-by: Yang Xiwen <forbidden405@...look.com>
> ---
>  drivers/net/ethernet/hisilicon/hisi_femac.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/hisilicon/hisi_femac.c b/drivers/net/ethernet/hisilicon/hisi_femac.c
> index 2406263c9dd3..5a088cba7d4e 100644
> --- a/drivers/net/ethernet/hisilicon/hisi_femac.c
> +++ b/drivers/net/ethernet/hisilicon/hisi_femac.c
> @@ -945,9 +945,7 @@ static int hisi_femac_drv_resume(struct platform_device *pdev)
>  #endif
>  
>  static const struct of_device_id hisi_femac_match[] = {
> -	{.compatible = "hisilicon,hisi-femac-v1",},
> -	{.compatible = "hisilicon,hisi-femac-v2",},
> -	{.compatible = "hisilicon,hi3516cv300-femac",},
> +	{.compatible = "hisilicon,hisi-femac",},

This breaks the ABI. I explained at least twice - use SoC compatibles. ONLY.

Best regards,
Krzysztof