1 files changed, 11 insertions, 37 deletions

diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index 8ee6b6e2e2a4..e7c284c890bc 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /* Copyright(c) 2020 Intel Corporation. All rights reserved. */
-#include <linux/io-64-nonatomic-lo-hi.h>
 #include <linux/memregion.h>
 #include <linux/workqueue.h>
 #include <linux/debugfs.h>
@@ -751,11 +750,10 @@ struct cxl_port *devm_cxl_add_port(struct device *host, struct device *uport,
 
 	parent_port = parent_dport ? parent_dport->port : NULL;
 	if (IS_ERR(port)) {
-		dev_dbg(uport, "Failed to add %s%s%s%s: %ld\n",
-			dev_name(&port->dev),
-			parent_port ? " to " : "",
+		dev_dbg(uport, "Failed to add%s%s%s: %ld\n",
+			parent_port ? " port to " : "",
 			parent_port ? dev_name(&parent_port->dev) : "",
-			parent_port ? "" : " (root port)",
+			parent_port ? "" : " root port",
 			PTR_ERR(port));
 	} else {
 		dev_dbg(uport, "%s added%s%s%s\n",
@@ -823,41 +821,17 @@ static bool dev_is_cxl_root_child(struct device *dev)
 	return false;
 }
 
-/* Find a 2nd level CXL port that has a dport that is an ancestor of @match */
-static int match_root_child(struct device *dev, const void *match)
+struct cxl_port *find_cxl_root(struct cxl_port *port)
 {
-	const struct device *iter = NULL;
-	struct cxl_dport *dport;
-	struct cxl_port *port;
-
-	if (!dev_is_cxl_root_child(dev))
-		return 0;
-
-	port = to_cxl_port(dev);
-	iter = match;
-	while (iter) {
-		dport = cxl_find_dport_by_dev(port, iter);
-		if (dport)
-			break;
-		iter = iter->parent;
-	}
+	struct cxl_port *iter = port;
 
-	return !!iter;
-}
+	while (iter && !is_cxl_root(iter))
+		iter = to_cxl_port(iter->dev.parent);
 
-struct cxl_port *find_cxl_root(struct device *dev)
-{
-	struct device *port_dev;
-	struct cxl_port *root;
-
-	port_dev = bus_find_device(&cxl_bus_type, NULL, dev, match_root_child);
-	if (!port_dev)
+	if (!iter)
 		return NULL;
-
-	root = to_cxl_port(port_dev->parent);
-	get_device(&root->dev);
-	put_device(port_dev);
-	return root;
+	get_device(&iter->dev);
+	return iter;
 }
 EXPORT_SYMBOL_NS_GPL(find_cxl_root, CXL);
 
@@ -1927,7 +1901,7 @@ bool schedule_cxl_memdev_detach(struct cxl_memdev *cxlmd)
 EXPORT_SYMBOL_NS_GPL(schedule_cxl_memdev_detach, CXL);
 
 /* for user tooling to ensure port disable work has completed */
-static ssize_t flush_store(struct bus_type *bus, const char *buf, size_t count)
+static ssize_t flush_store(const struct bus_type *bus, const char *buf, size_t count)
 {
 	if (sysfs_streq(buf, "1")) {
 		flush_workqueue(cxl_bus_wq);