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From: Robert Richter <rrichter@amd.com>
To: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Alison Schofield <alison.schofield@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Ira Weiny <ira.weiny@intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Davidlohr Bueso <dave@stgolabs.net>,
	linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org,
	Gregory Price <gourry@gourry.net>,
	"Fabio M. De Francesco" <fabio.m.de.francesco@linux.intel.com>,
	Terry Bowman <terry.bowman@amd.com>,
	Joshua Hahn <joshua.hahnjy@gmail.com>
Subject: Re: [PATCH v4 14/14] cxl/region: Remove local variable @inc in cxl_port_setup_targets()
Date: Thu, 13 Nov 2025 21:10:58 +0100	[thread overview]
Message-ID: <aRY7UhpGpvOeWhAF@rric.localdomain> (raw)
In-Reply-To: <20251111153644.000065bd@huawei.com>

On 11.11.25 15:36:44, Jonathan Cameron wrote:
> On Mon, 3 Nov 2025 19:47:55 +0100
> Robert Richter <rrichter@amd.com> wrote:
> 
> > Simplify the code by removing local variable @inc. The variable is not
> > used elsewhere, remove it and directly increment the target number.
> > 
> > Signed-off-by: Robert Richter <rrichter@amd.com>
> Hmm. I wonder what the thought process behind this once was? Ah well
> clearly not needed now and I can't be bothered to do the archeology /
> have too much other stuff to review!

The inc was there from the beginning (27b3f8d13830c). Maybe code
changed in the area during review process and left this as a
remainder from something else.

Thanks,

-Robert

> 
> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
> 
> > ---
> >  drivers/cxl/core/region.c | 5 ++---
> >  1 file changed, 2 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> > index dec003084521..a81fbe9cedae 100644
> > --- a/drivers/cxl/core/region.c
> > +++ b/drivers/cxl/core/region.c
> > @@ -1332,7 +1332,7 @@ static int cxl_port_setup_targets(struct cxl_port *port,
> >  				  struct cxl_endpoint_decoder *cxled)
> >  {
> >  	struct cxl_root_decoder *cxlrd = cxlr->cxlrd;
> > -	int parent_iw, parent_ig, ig, iw, rc, inc = 0, pos = cxled->pos;
> > +	int parent_iw, parent_ig, ig, iw, rc, pos = cxled->pos;
> >  	struct cxl_port *parent_port = to_cxl_port(port->dev.parent);
> >  	struct cxl_region_ref *cxl_rr = cxl_rr_load(port, cxlr);
> >  	struct cxl_memdev *cxlmd = cxled_to_memdev(cxled);
> > @@ -1524,9 +1524,8 @@ static int cxl_port_setup_targets(struct cxl_port *port,
> >  		cxlsd->target[cxl_rr->nr_targets_set] = ep->dport;
> >  		cxlsd->cxld.target_map[cxl_rr->nr_targets_set] = ep->dport->port_id;
> >  	}
> > -	inc = 1;
> > +	cxl_rr->nr_targets_set++;
> >  out_target_set:
> > -	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), dev_name(&port->dev),
> >  		cxl_rr->nr_targets_set - 1, dev_name(ep->dport->dport_dev),
> 

  reply	other threads:[~2025-11-13 20:10 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-03 18:47 [PATCH v4 00/14] cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement Robert Richter
2025-11-03 18:47 ` [PATCH v4 01/14] cxl/region: Store root decoder in struct cxl_region Robert Richter
2025-11-11 14:45   ` Jonathan Cameron
2025-11-14  9:38     ` Robert Richter
2025-11-03 18:47 ` [PATCH v4 02/14] cxl/region: Store HPA range " Robert Richter
2025-11-11 11:25   ` Robert Richter
2025-11-03 18:47 ` [PATCH v4 03/14] cxl/region: Rename misleading variable name @hpa to @hpa_range Robert Richter
2025-11-03 21:36   ` Dave Jiang
2025-11-11 14:41   ` Jonathan Cameron
2025-11-12 16:23     ` Dave Jiang
2025-11-03 18:47 ` [PATCH v4 04/14] cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos() Robert Richter
2025-11-03 21:52   ` Dave Jiang
2025-11-04  3:04   ` Alison Schofield
2025-11-11 11:28     ` Robert Richter
2025-11-04 16:52   ` kernel test robot
2025-11-03 18:47 ` [PATCH v4 05/14] cxl: Simplify cxl_root_ops allocation and handling Robert Richter
2025-11-03 21:53   ` Dave Jiang
2025-11-04 23:02     ` Dave Jiang
2025-11-07 15:45       ` Robert Richter
2025-11-07 15:50         ` Dave Jiang
2025-11-11 14:52   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 06/14] cxl/region: Separate region parameter setup and region construction Robert Richter
2025-11-03 22:05   ` Dave Jiang
2025-11-07 15:59     ` Robert Richter
2025-11-11 14:59       ` Jonathan Cameron
2025-11-11 15:02   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 07/14] cxl/region: Use region data to get the root decoder Robert Richter
2025-11-03 22:30   ` Dave Jiang
2025-11-11 15:14   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 08/14] cxl: Introduce callback for HPA address ranges translation Robert Richter
2025-11-03 23:09   ` Dave Jiang
2025-11-11 15:15   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 09/14] cxl/acpi: Prepare use of EFI runtime services Robert Richter
2025-11-03 23:34   ` Dave Jiang
2025-11-11 15:17   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 10/14] cxl: Enable AMD Zen5 address translation using ACPI PRMT Robert Richter
2025-11-04  1:00   ` Dave Jiang
2025-11-11  9:23     ` Robert Richter
2025-11-04  9:33   ` kernel test robot
2025-11-04 12:49     ` Robert Richter
2025-11-04 23:35   ` kernel test robot
2025-11-11 15:30   ` Jonathan Cameron
2025-11-13 11:24     ` Robert Richter
2025-11-03 18:47 ` [PATCH v4 11/14] cxl/atl: Lock decoders that need address translation Robert Richter
2025-11-04 17:13   ` Dave Jiang
2025-11-11 12:54     ` Robert Richter
2025-11-12 16:34       ` Dave Jiang
2025-11-13 20:05         ` Robert Richter
2025-11-13 20:36           ` Dave Jiang
2025-11-14  7:34             ` Robert Richter
2025-11-14 15:21               ` Dave Jiang
2025-11-11 15:31   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 12/14] cxl: Simplify cxl_rd_ops allocation and handling Robert Richter
2025-11-04 17:26   ` Dave Jiang
2025-11-04 23:02   ` Alison Schofield
2025-11-11 12:07     ` Robert Richter
2025-11-11 15:34   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 13/14] cxl/acpi: Group xor arithmetric setup code in a single block Robert Richter
2025-11-11 15:35   ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 14/14] cxl/region: Remove local variable @inc in cxl_port_setup_targets() Robert Richter
2025-11-11 15:36   ` Jonathan Cameron
2025-11-13 20:10     ` Robert Richter [this message]
2025-11-04 16:17 ` [PATCH v4 00/14] cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement Alison Schofield
2025-11-17 15:34   ` Robert Richter
2025-11-17 17:23     ` Gregory Price
2025-11-11 14:01 ` Gregory Price

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