netdev - Re: [PATCH v17 09/22] sfc: create type2 cxl memdev

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Message-ID: <20250627095120.000056bf@huawei.com>
Date: Fri, 27 Jun 2025 09:51:20 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: <alejandro.lucero-palau@....com>
CC: <linux-cxl@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dan.j.williams@...el.com>, <edward.cree@....com>, <davem@...emloft.net>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <edumazet@...gle.com>,
	<dave.jiang@...el.com>, Alejandro Lucero <alucerop@....com>, Martin Habets
	<habetsm.xilinx@...il.com>, Fan Ni <fan.ni@...sung.com>, Edward Cree
	<ecree.xilinx@...il.com>
Subject: Re: [PATCH v17 09/22] sfc: create type2 cxl memdev

On Tue, 24 Jun 2025 15:13:42 +0100
<alejandro.lucero-palau@....com> wrote:

> From: Alejandro Lucero <alucerop@....com>
> 
> Use cxl API for creating a cxl memory device using the type2
> cxl_dev_state struct.
> 
> Signed-off-by: Alejandro Lucero <alucerop@....com>
> Reviewed-by: Martin Habets <habetsm.xilinx@...il.com>
> Reviewed-by: Fan Ni <fan.ni@...sung.com>
> Acked-by: Edward Cree <ecree.xilinx@...il.com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> ---
>  drivers/net/ethernet/sfc/efx_cxl.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
> index 5d68ee4e818d..e2d52ed49535 100644
> --- a/drivers/net/ethernet/sfc/efx_cxl.c
> +++ b/drivers/net/ethernet/sfc/efx_cxl.c
> @@ -79,6 +79,13 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
>  
>  	cxl_set_capacity(&cxl->cxlds, EFX_CTPIO_BUFFER_SIZE);
>  
> +	cxl->cxlmd = devm_cxl_add_memdev(&pci_dev->dev, &cxl->cxlds);
> +
Trivial style thing but common practice (I haven't checked local style)
is no blank line between call and associated error check. 
> +	if (IS_ERR(cxl->cxlmd)) {
> +		pci_err(pci_dev, "CXL accel memdev creation failed");
> +		return PTR_ERR(cxl->cxlmd);
> +	}
> +
>  	probe_data->cxl = cxl;
>  
>  	return 0;