linux-kernel - [PATCH v12 20/20] cxl/core/regs: Rework cxl_map_pmu

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Message-ID: <20231018171713.1883517-21-rrichter@amd.com>
Date:   Wed, 18 Oct 2023 19:17:13 +0200
From:   Robert Richter <rrichter@....com>
To:     Davidlohr Bueso <dave@...olabs.net>,
        Jonathan Cameron <jonathan.cameron@...wei.com>,
        Dave Jiang <dave.jiang@...el.com>,
        "Alison Schofield" <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>
CC:     <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Terry Bowman <terry.bowman@....com>,
        Robert Richter <rrichter@....com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v12 20/20] cxl/core/regs: Rework cxl_map_pmu_regs() to use map->dev for devm

struct cxl_register_map carries a @dev parameter for devm operations.
Simplify the function interface to use that instead of a separate @dev
argument.

Signed-off-by: Terry Bowman <terry.bowman@....com>
Signed-off-by: Robert Richter <rrichter@....com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
---
 drivers/cxl/core/regs.c | 5 ++---
 drivers/cxl/cxl.h       | 3 +--
 drivers/cxl/pci.c       | 2 +-
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/cxl/core/regs.c b/drivers/cxl/core/regs.c
index cac28a656cb8..372786f80955 100644
--- a/drivers/cxl/core/regs.c
+++ b/drivers/cxl/core/regs.c
@@ -386,10 +386,9 @@ int cxl_count_regblock(struct pci_dev *pdev, enum cxl_regloc_type type)
 }
 EXPORT_SYMBOL_NS_GPL(cxl_count_regblock, CXL);
 
-int cxl_map_pmu_regs(struct pci_dev *pdev, struct cxl_pmu_regs *regs,
-		     struct cxl_register_map *map)
+int cxl_map_pmu_regs(struct cxl_register_map *map, struct cxl_pmu_regs *regs)
 {
-	struct device *dev = &pdev->dev;
+	struct device *dev = map->host;
 	resource_size_t phys_addr;
 
 	phys_addr = map->resource;
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 3b09286d9d52..378fc96ff7ff 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -286,8 +286,7 @@ int cxl_map_component_regs(const struct cxl_register_map *map,
 			   unsigned long map_mask);
 int cxl_map_device_regs(const struct cxl_register_map *map,
 			struct cxl_device_regs *regs);
-int cxl_map_pmu_regs(struct pci_dev *pdev, struct cxl_pmu_regs *regs,
-		     struct cxl_register_map *map);
+int cxl_map_pmu_regs(struct cxl_register_map *map, struct cxl_pmu_regs *regs);
 
 enum cxl_regloc_type;
 int cxl_count_regblock(struct pci_dev *pdev, enum cxl_regloc_type type);
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 037792e941f2..fa94bc61af25 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -898,7 +898,7 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 			break;
 		}
 
-		rc = cxl_map_pmu_regs(pdev, &pmu_regs, &map);
+		rc = cxl_map_pmu_regs(&map, &pmu_regs);
 		if (rc) {
 			dev_dbg(&pdev->dev, "Could not map PMU regs\n");
 			break;
-- 
2.30.2