linux-kernel - Re: [PATCH v7 11/17] cxl/pci: Change find_cxl

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Message-ID: <e95baa3b-d8f9-4fae-866a-7fa6a58d0169@intel.com>
Date: Tue, 11 Feb 2025 16:42:47 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Terry Bowman <terry.bowman@....com>, linux-cxl@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
 nifan.cxl@...il.com, dave@...olabs.net, jonathan.cameron@...wei.com,
 alison.schofield@...el.com, vishal.l.verma@...el.com,
 dan.j.williams@...el.com, bhelgaas@...gle.com, mahesh@...ux.ibm.com,
 ira.weiny@...el.com, oohall@...il.com, Benjamin.Cheatham@....com,
 rrichter@....com, nathan.fontenot@....com,
 Smita.KoralahalliChannabasappa@....com, lukas@...ner.de,
 ming.li@...omail.com, PradeepVineshReddy.Kodamati@....com
Subject: Re: [PATCH v7 11/17] cxl/pci: Change find_cxl_port() to non-static



On 2/11/25 12:24 PM, Terry Bowman wrote:
> CXL PCIe Port Protocol Error support will be added in the future. This
> requires searching for a CXL PCIe Port device in the CXL topology as
> provided by find_cxl_port(). But, find_cxl_port() is defined static
> and as a result is not callable outside of this source file.
> 
> Update the find_cxl_port() declaration to be non-static.
> 
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Reviewed-by: Ira Weiny <ira.weiny@...el.com>
> Reviewed-by: Gregory Price <gourry@...rry.net>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>

I think this could've went with the same patch that's doing the calling of this function. 

> ---
>  drivers/cxl/core/core.h | 2 ++
>  drivers/cxl/core/port.c | 4 ++--
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/cxl/core/core.h b/drivers/cxl/core/core.h
> index a20ea2b7d1a4..796334f2ad6c 100644
> --- a/drivers/cxl/core/core.h
> +++ b/drivers/cxl/core/core.h
> @@ -118,5 +118,7 @@ int cxl_port_get_switch_dport_bandwidth(struct cxl_port *port,
>  					struct access_coordinate *c);
>  
>  int cxl_gpf_port_setup(struct device *dport_dev, struct cxl_port *port);
> +struct cxl_port *find_cxl_port(struct device *dport_dev,
> +			       struct cxl_dport **dport);
>  
>  #endif /* __CXL_CORE_H__ */
> diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
> index f9501a16b390..ae6471e4ebff 100644
> --- a/drivers/cxl/core/port.c
> +++ b/drivers/cxl/core/port.c
> @@ -1352,8 +1352,8 @@ static struct cxl_port *__find_cxl_port(struct cxl_find_port_ctx *ctx)
>  	return NULL;
>  }
>  
> -static struct cxl_port *find_cxl_port(struct device *dport_dev,
> -				      struct cxl_dport **dport)
> +struct cxl_port *find_cxl_port(struct device *dport_dev,
> +			       struct cxl_dport **dport)
>  {
>  	struct cxl_find_port_ctx ctx = {
>  		.dport_dev = dport_dev,