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Date: Thu, 22 Jun 2023 15:53:09 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Terry Bowman <terry.bowman@....com>, <alison.schofield@...el.com>,
<vishal.l.verma@...el.com>, <ira.weiny@...el.com>,
<bwidawsk@...nel.org>, <dan.j.williams@...el.com>,
<Jonathan.Cameron@...wei.com>, <linux-cxl@...r.kernel.org>
CC: <rrichter@....com>, <linux-kernel@...r.kernel.org>,
<bhelgaas@...gle.com>
Subject: Re: [PATCH v6 05/27] cxl: Rename member @dport of struct cxl_dport to
@dport_dev
On 6/21/23 20:51, Terry Bowman wrote:
> From: Robert Richter <rrichter@....com>
>
> Reading code like dport->dport does not immediately suggest that this
> points to the corresponding device structure of the dport. Rename
> struct member @dport to @dport_dev.
>
> While at it, also rename @new argument of add_dport() to @dport. This
> better describes the variable as a dport (e.g. new->dport becomes to
> dport->dport_dev).
>
> Co-developed-by: Terry Bowman <terry.bowman@....com>
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> Signed-off-by: Robert Richter <rrichter@....com>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>
> ---
> drivers/cxl/core/port.c | 20 ++++++++++----------
> drivers/cxl/core/region.c | 4 ++--
> drivers/cxl/cxl.h | 4 ++--
> 3 files changed, 14 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
> index 76888c75dae4..7d3079f5b7b5 100644
> --- a/drivers/cxl/core/port.c
> +++ b/drivers/cxl/core/port.c
> @@ -605,7 +605,7 @@ static int devm_cxl_link_parent_dport(struct device *host,
> if (!parent_dport)
> return 0;
>
> - rc = sysfs_create_link(&port->dev.kobj, &parent_dport->dport->kobj,
> + rc = sysfs_create_link(&port->dev.kobj, &parent_dport->dport_dev->kobj,
> "parent_dport");
> if (rc)
> return rc;
> @@ -658,7 +658,7 @@ static struct cxl_port *cxl_port_alloc(struct device *uport,
> if (iter->host_bridge)
> port->host_bridge = iter->host_bridge;
> else if (parent_dport->rch)
> - port->host_bridge = parent_dport->dport;
> + port->host_bridge = parent_dport->dport_dev;
> else
> port->host_bridge = iter->uport;
> dev_dbg(uport, "host-bridge: %s\n", dev_name(port->host_bridge));
> @@ -847,22 +847,22 @@ static struct cxl_dport *find_dport(struct cxl_port *port, int id)
> return NULL;
> }
>
> -static int add_dport(struct cxl_port *port, struct cxl_dport *new)
> +static int add_dport(struct cxl_port *port, struct cxl_dport *dport)
> {
> struct cxl_dport *dup;
> int rc;
>
> device_lock_assert(&port->dev);
> - dup = find_dport(port, new->port_id);
> + dup = find_dport(port, dport->port_id);
> if (dup) {
> dev_err(&port->dev,
> "unable to add dport%d-%s non-unique port id (%s)\n",
> - new->port_id, dev_name(new->dport),
> - dev_name(dup->dport));
> + dport->port_id, dev_name(dport->dport_dev),
> + dev_name(dup->dport_dev));
> return -EBUSY;
> }
>
> - rc = xa_insert(&port->dports, (unsigned long)new->dport, new,
> + rc = xa_insert(&port->dports, (unsigned long)dport->dport_dev, dport,
> GFP_KERNEL);
> if (rc)
> return rc;
> @@ -895,8 +895,8 @@ static void cxl_dport_remove(void *data)
> struct cxl_dport *dport = data;
> struct cxl_port *port = dport->port;
>
> - xa_erase(&port->dports, (unsigned long) dport->dport);
> - put_device(dport->dport);
> + xa_erase(&port->dports, (unsigned long) dport->dport_dev);
> + put_device(dport->dport_dev);
> }
>
> static void cxl_dport_unlink(void *data)
> @@ -954,7 +954,7 @@ __devm_cxl_add_dport(struct cxl_port *port, struct device *dport_dev,
> dev_dbg(dport_dev, "Component Registers found for dport: %pa\n",
> &component_reg_phys);
>
> - dport->dport = dport_dev;
> + dport->dport_dev = dport_dev;
> dport->port_id = port_id;
> dport->component_reg_phys = component_reg_phys;
> dport->port = port;
> diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> index f822de44bee0..13cda989d944 100644
> --- a/drivers/cxl/core/region.c
> +++ b/drivers/cxl/core/region.c
> @@ -1162,7 +1162,7 @@ static int cxl_port_setup_targets(struct cxl_port *port,
> dev_dbg(&cxlr->dev, "%s:%s: %s expected %s at %d\n",
> dev_name(port->uport), dev_name(&port->dev),
> dev_name(&cxlsd->cxld.dev),
> - dev_name(ep->dport->dport),
> + dev_name(ep->dport->dport_dev),
> cxl_rr->nr_targets_set);
> return -ENXIO;
> }
> @@ -1173,7 +1173,7 @@ static int cxl_port_setup_targets(struct cxl_port *port,
> cxl_rr->nr_targets_set += inc;
> dev_dbg(&cxlr->dev, "%s:%s target[%d] = %s for %s:%s @ %d\n",
> dev_name(port->uport), dev_name(&port->dev),
> - cxl_rr->nr_targets_set - 1, dev_name(ep->dport->dport),
> + cxl_rr->nr_targets_set - 1, dev_name(ep->dport->dport_dev),
> dev_name(&cxlmd->dev), dev_name(&cxled->cxld.dev), pos);
>
> return 0;
> diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
> index 7c8674079f1a..7232c2a0e27c 100644
> --- a/drivers/cxl/cxl.h
> +++ b/drivers/cxl/cxl.h
> @@ -589,7 +589,7 @@ struct cxl_rcrb_info {
>
> /**
> * struct cxl_dport - CXL downstream port
> - * @dport: PCI bridge or firmware device representing the downstream link
> + * @dport_dev: PCI bridge or firmware device representing the downstream link
> * @port_id: unique hardware identifier for dport in decoder target list
> * @component_reg_phys: downstream port component registers
> * @rcrb: Data about the Root Complex Register Block layout
> @@ -597,7 +597,7 @@ struct cxl_rcrb_info {
> * @port: reference to cxl_port that contains this downstream port
> */
> struct cxl_dport {
> - struct device *dport;
> + struct device *dport_dev;
> int port_id;
> resource_size_t component_reg_phys;
> struct cxl_rcrb_info rcrb;
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