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cxl/region: Add a dev_err() on missing target list entries

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[ Upstream commit d90acdf49e18029cfe4194475c45ef143657737a ]

Broken target lists are hard to discover as the driver fails at a
later initialization stage. Add an error message for this.

Example log messages:

  cxl_mem mem1: failed to find endpoint6:0000:e0:01.3 in target list of decoder1.1
  cxl_port endpoint6: failed to register decoder6.0: -6
  cxl_port endpoint6: probe: 0

Signed-off-by: Robert Richter <rrichter@amd.com>
Reviewed-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: "Fabio M. De Francesco" <fabio.m.de.francesco@linux.intel.com>
Tested-by: Gregory Price <gourry@gourry.net>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20250509150700.2817697-14-rrichter@amd.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Robert Richter
2025-05-09 17:06:58 +02:00
committed by Greg Kroah-Hartman
parent 96715eb1a1
commit 9d90ab45d3
1 changed files with 7 additions and 0 deletions
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7
drivers/cxl/core/region.c
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@@ -1653,6 +1653,13 @@ static int find_pos_and_ways(struct cxl_port *port, struct range *range,
} }
put_device(dev); put_device(dev);
if (rc)
dev_err(port->uport_dev,
"failed to find %s:%s in target list of %s\n",
dev_name(&port->dev),
dev_name(port->parent_dport->dport_dev),
dev_name(&cxlsd->cxld.dev));
return rc; return rc;
} }