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path: root/drivers/cxl/core/port.c
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Diffstat (limited to 'drivers/cxl/core/port.c')
-rw-r--r--drivers/cxl/core/port.c38
1 files changed, 7 insertions, 31 deletions
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index 8ee6b6e2e2a4..4d1f9c5b5029 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -823,41 +823,17 @@ 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;
- }
-
- return !!iter;
-}
+ struct cxl_port *iter = port;
-struct cxl_port *find_cxl_root(struct device *dev)
-{
- struct device *port_dev;
- struct cxl_port *root;
+ while (iter && !is_cxl_root(iter))
+ iter = to_cxl_port(iter->dev.parent);
- 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);