linux-kernel - Re: [PATCH v14 21/34] cxl/port: Move dport RAS reporting to a port resource

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Message-ID: <20260115150230.00002e32@huawei.com>
Date: Thu, 15 Jan 2026 15:02:30 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: Terry Bowman <terry.bowman@....com>
CC: <dave@...olabs.net>, <dave.jiang@...el.com>, <alison.schofield@...el.com>,
	<dan.j.williams@...el.com>, <bhelgaas@...gle.com>, <shiju.jose@...wei.com>,
	<ming.li@...omail.com>, <Smita.KoralahalliChannabasappa@....com>,
	<rrichter@....com>, <dan.carpenter@...aro.org>,
	<PradeepVineshReddy.Kodamati@....com>, <lukas@...ner.de>,
	<Benjamin.Cheatham@....com>, <sathyanarayanan.kuppuswamy@...ux.intel.com>,
	<linux-cxl@...r.kernel.org>, <vishal.l.verma@...el.com>, <alucerop@....com>,
	<ira.weiny@...el.com>, <linux-kernel@...r.kernel.org>,
	<linux-pci@...r.kernel.org>
Subject: Re: [PATCH v14 21/34] cxl/port: Move dport RAS reporting to a port
 resource

On Wed, 14 Jan 2026 12:20:42 -0600
Terry Bowman <terry.bowman@....com> wrote:

> From: Dan Williams <dan.j.williams@...el.com>
> 
> Towards the end goal of making all CXL RAS capability handling uniform
> across upstream host bridges, upstream switch ports, and upstream endpoint
> ports, move dport RAS setup to cxl_endpoint_port_probe(). Rename the RAS
> setup helper to devm_cxl_dport_ras_setup() for symmetry with
> devm_cxl_switch_port_decoders_setup().
> 
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> Reviewed-by: Terry Bowman <terry.bowman@....com>

One trivial thing inline.
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>

> 
> ---
> 
> Changes in v13 -> v14:
> - New patch
> ---
>  drivers/cxl/core/ras.c        | 12 ++++++------
>  drivers/cxl/cxlpci.h          |  8 ++++----
>  drivers/cxl/mem.c             |  2 --
>  drivers/cxl/port.c            | 12 ++++++++++++
>  tools/testing/cxl/Kbuild      |  2 +-
>  tools/testing/cxl/test/mock.c |  6 +++---
>  6 files changed, 26 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/cxl/core/ras.c b/drivers/cxl/core/ras.c
> index 72908f3ced77..d71fcac31cf2 100644
> --- a/drivers/cxl/core/ras.c
> +++ b/drivers/cxl/core/ras.c
> @@ -139,17 +139,17 @@ static void cxl_dport_map_ras(struct cxl_dport *dport)
>  }
>  
>  /**
> - * cxl_dport_init_ras_reporting - Setup CXL RAS report on this dport
> + * devm_cxl_dport_ras_setup - Setup CXL RAS report on this dport
>   * @dport: the cxl_dport that needs to be initialized
> - * @host: host device for devm operations
>   */
> -void cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host)
> +void devm_cxl_dport_ras_setup(struct cxl_dport *dport)
Not a thing for this patch set, but might be nice to at somepoint
prefix all the functions that have devm_ registrations in them so
it is obvious where those are hiding. I had to dig down a few
levels to find the call.
>  {
> -	dport->reg_map.host = host;
> +	dport->reg_map.host = &dport->port->dev;
>  	cxl_dport_map_ras(dport);
>  
>  	if (dport->rch) {
> -		struct pci_host_bridge *host_bridge = to_pci_host_bridge(dport->dport_dev);
> +		struct pci_host_bridge *host_bridge =
> +			to_pci_host_bridge(dport->dport_dev);

Unrelated change.  This series is complex, so this sort of noise is not helpful
to reviewability!

>  
>  		if (!host_bridge->native_aer)
>  			return;
> @@ -158,7 +158,7 @@ void cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host)
>  		cxl_disable_rch_root_ints(dport);
>  	}
>  }
> -EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL");
> +EXPORT_SYMBOL_NS_GPL(devm_cxl_dport_ras_setup, "CXL");
>  
>  void cxl_handle_cor_ras(struct device *dev, void __iomem *ras_base)
>  {