diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c
index 7440f84be6c8..552203c13b39 100644
--- a/drivers/cxl/core/pci.c
+++ b/drivers/cxl/core/pci.c
@@ -308,36 +308,17 @@ static void disable_hdm(void *_cxlhdm)
 	       hdm + CXL_HDM_DECODER_CTRL_OFFSET);
 }
 
-int devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm)
+static int devm_cxl_enable_hdm(struct device *host, struct cxl_hdm *cxlhdm)
 {
-	void __iomem *hdm;
+	void __iomem *hdm = cxlhdm->regs.hdm_decoder;
 	u32 global_ctrl;
 
-	/*
-	 * If the hdm capability was not mapped there is nothing to enable and
-	 * the caller is responsible for what happens next.  For example,
-	 * emulate a passthrough decoder.
-	 */
-	if (IS_ERR(cxlhdm))
-		return 0;
-
-	hdm = cxlhdm->regs.hdm_decoder;
 	global_ctrl = readl(hdm + CXL_HDM_DECODER_CTRL_OFFSET);
-
-	/*
-	 * If the HDM decoder capability was enabled on entry, skip
-	 * registering disable_hdm() since this decode capability may be
-	 * owned by platform firmware.
-	 */
-	if (global_ctrl & CXL_HDM_DECODER_ENABLE)
-		return 0;
-
 	writel(global_ctrl | CXL_HDM_DECODER_ENABLE,
 	       hdm + CXL_HDM_DECODER_CTRL_OFFSET);
 
-	return devm_add_action_or_reset(&port->dev, disable_hdm, cxlhdm);
+	return devm_add_action_or_reset(host, disable_hdm, cxlhdm);
 }
-EXPORT_SYMBOL_NS_GPL(devm_cxl_enable_hdm, CXL);
 
 int cxl_dvsec_rr_decode(struct device *dev, int d,
 			struct cxl_endpoint_dvsec_info *info)
@@ -511,7 +492,7 @@ int cxl_hdm_decode_init(struct cxl_dev_state *cxlds, struct cxl_hdm *cxlhdm,
 	if (info->mem_enabled)
 		return 0;
 
-	rc = devm_cxl_enable_hdm(port, cxlhdm);
+	rc = devm_cxl_enable_hdm(&port->dev, cxlhdm);
 	if (rc)
 		return rc;
 
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 74548f8f5f4c..d743df66a582 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -717,7 +717,6 @@ struct cxl_endpoint_dvsec_info {
 struct cxl_hdm;
 struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port,
 				   struct cxl_endpoint_dvsec_info *info);
-int devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm);
 int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
 				struct cxl_endpoint_dvsec_info *info);
 int devm_cxl_add_passthrough_decoder(struct cxl_port *port);
diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c
index 5ffe3c7d2f5e..43718d0396d7 100644
--- a/drivers/cxl/port.c
+++ b/drivers/cxl/port.c
@@ -60,17 +60,13 @@ static int discover_region(struct device *dev, void *root)
 static int cxl_switch_port_probe(struct cxl_port *port)
 {
 	struct cxl_hdm *cxlhdm;
-	int rc, nr_dports;
-
-	nr_dports = devm_cxl_port_enumerate_dports(port);
-	if (nr_dports < 0)
-		return nr_dports;
+	int rc;
 
-	cxlhdm = devm_cxl_setup_hdm(port, NULL);
-	rc = devm_cxl_enable_hdm(port, cxlhdm);
-	if (rc)
+	rc = devm_cxl_port_enumerate_dports(port);
+	if (rc < 0)
 		return rc;
 
+	cxlhdm = devm_cxl_setup_hdm(port, NULL);
 	if (!IS_ERR(cxlhdm))
 		return devm_cxl_enumerate_decoders(cxlhdm, NULL);
 
@@ -79,7 +75,7 @@ static int cxl_switch_port_probe(struct cxl_port *port)
 		return PTR_ERR(cxlhdm);
 	}
 
-	if (nr_dports == 1) {
+	if (rc == 1) {
 		dev_dbg(&port->dev, "Fallback to passthrough decoder\n");
 		return devm_cxl_add_passthrough_decoder(port);
 	}
diff --git a/tools/testing/cxl/Kbuild b/tools/testing/cxl/Kbuild
index 6f9347ade82c..fba7bec96acd 100644
--- a/tools/testing/cxl/Kbuild
+++ b/tools/testing/cxl/Kbuild
@@ -6,7 +6,6 @@ ldflags-y += --wrap=acpi_pci_find_root
 ldflags-y += --wrap=nvdimm_bus_register
 ldflags-y += --wrap=devm_cxl_port_enumerate_dports
 ldflags-y += --wrap=devm_cxl_setup_hdm
-ldflags-y += --wrap=devm_cxl_enable_hdm
 ldflags-y += --wrap=devm_cxl_add_passthrough_decoder
 ldflags-y += --wrap=devm_cxl_enumerate_decoders
 ldflags-y += --wrap=cxl_await_media_ready
diff --git a/tools/testing/cxl/test/mock.c b/tools/testing/cxl/test/mock.c
index 284416527644..de3933a776fd 100644
--- a/tools/testing/cxl/test/mock.c
+++ b/tools/testing/cxl/test/mock.c
@@ -149,21 +149,6 @@ struct cxl_hdm *__wrap_devm_cxl_setup_hdm(struct cxl_port *port,
 }
 EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_setup_hdm, CXL);
 
-int __wrap_devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm)
-{
-	int index, rc;
-	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
-
-	if (ops && ops->is_mock_port(port->uport))
-		rc = 0;
-	else
-		rc = devm_cxl_enable_hdm(port, cxlhdm);
-	put_cxl_mock_ops(index);
-
-	return rc;
-}
-EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_enable_hdm, CXL);
-
 int __wrap_devm_cxl_add_passthrough_decoder(struct cxl_port *port)
 {
 	int rc, index;
