Re: [PATCH v17 04/11] cxl: Rename find_cxl_port() to find_cxl_port_by_dport()

Dave Jiang
2026-05-05T22:06:46Z

On 5/5/26 10:30 AM, Terry Bowman wrote:
> From: Dan Williams <djbw@kernel.org>
>
> find_cxl_port() and find_cxl_port_by_uport() are internal port lookup
> functions that search the CXL bus by dport and uport respectively, but
> their names do not make the lookup method clear.
>
> Rename find_cxl_port() to find_cxl_port_by_dport() to make the lookup
> method explicit and consistent with find_cxl_port_by_uport(). Both
> functions remain static to port.c; the upcoming patch that adds the
> first cross-file caller will widen their scope.
>
> Co-developed-by: Terry Bowman <terry.bowman@amd.com>
> Signed-off-by: Terry Bowman <terry.bowman@amd.com>
> Signed-off-by: Dan Williams <djbw@kernel.org>

Reviewed-by: Dave Jiang <dave.jiang@intel.com>

>
> ---
>
> Changes in v16->v17:
> - New commit
> ---
> drivers/cxl/core/port.c | 20 ++++++++++++++------
> 1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
> index c5aacd7054f1..b35a9016fc81 100644
> --- a/drivers/cxl/core/port.c
> +++ b/drivers/cxl/core/port.c
> @@ -1377,7 +1377,7 @@ static int match_port_by_dport(struct device *dev, const void *data)
> return dport != NULL;
> }
>
> -static struct cxl_port *__find_cxl_port(struct cxl_find_port_ctx *ctx)
> +static struct cxl_port *__find_cxl_port_by_dport(struct cxl_find_port_ctx *ctx)
> {
> struct device *dev;
>
> @@ -1390,8 +1390,16 @@ 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)
> +/**
> + * find_cxl_port_by_dport - find a cxl_port by one of its targets
> + * @dport_dev: device representing the dport target
> + * @dport: optional output of the 'struct cxl_dport' companion of the @dport_dev
> + *
> + * Return a 'struct cxl_port' with an elevated reference if found. Use
> + * __free(put_cxl_port) to release.
> + */
> +static struct cxl_port *find_cxl_port_by_dport(struct device *dport_dev,
> + struct cxl_dport **dport)
> {
> struct cxl_find_port_ctx ctx = {
> .dport_dev = dport_dev,
> @@ -1399,7 +1407,7 @@ static struct cxl_port *find_cxl_port(struct device *dport_dev,
> };
> struct cxl_port *port;
>
> - port = __find_cxl_port(&ctx);
> + port = __find_cxl_port_by_dport(&ctx);
> return port;
> }
>
> @@ -1893,14 +1901,14 @@ EXPORT_SYMBOL_NS_GPL(devm_cxl_enumerate_ports, "CXL");
> struct cxl_port *cxl_pci_find_port(struct pci_dev *pdev,
> struct cxl_dport **dport)
> {
> - return find_cxl_port(pdev->dev.parent, dport);
> + return find_cxl_port_by_dport(pdev->dev.parent, dport);
> }
> EXPORT_SYMBOL_NS_GPL(cxl_pci_find_port, "CXL");
>
> struct cxl_port *cxl_mem_find_port(struct cxl_memdev *cxlmd,
> struct cxl_dport **dport)
> {
> - return find_cxl_port(grandparent(&cxlmd->dev), dport);
> + return find_cxl_port_by_dport(grandparent(&cxlmd->dev), dport);
> }
> EXPORT_SYMBOL_NS_GPL(cxl_mem_find_port, "CXL");
>