linux-kernel - [RFC net-next 12/15] net: cpc: create system endpoint with a new interface

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Message-ID: <20250512012748.79749-13-damien.riegel@silabs.com>
Date: Sun, 11 May 2025 21:27:45 -0400
From: Damien Riégel <damien.riegel@...abs.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Silicon Labs Kernel Team <linux-devel@...abs.com>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [RFC net-next 12/15] net: cpc: create system endpoint with a new interface

Without a system endpoint, no new endpoints will ever be created on an
interface, so as part of the registration of a new interface, create the
system endpoint attached to it.

Signed-off-by: Damien Riégel <damien.riegel@...abs.com>
---
 drivers/net/cpc/interface.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/cpc/interface.c b/drivers/net/cpc/interface.c
index 13b52cdc357..dec4c9be3c4 100644
--- a/drivers/net/cpc/interface.c
+++ b/drivers/net/cpc/interface.c
@@ -9,6 +9,7 @@
 #include "header.h"
 #include "interface.h"
 #include "protocol.h"
+#include "system.h"
 
 #define to_cpc_interface(d) container_of(d, struct cpc_interface, dev)
 
@@ -143,13 +144,25 @@ struct cpc_interface *cpc_interface_alloc(struct device *parent,
  */
 int cpc_interface_register(struct cpc_interface *intf)
 {
+	struct cpc_endpoint *system_ep;
 	int err;
 
 	err = device_add(&intf->dev);
 	if (err)
 		return err;
 
+	system_ep = cpc_endpoint_new(intf, 0, CPC_SYSTEM_ENDPOINT_NAME);
+	if (!system_ep) {
+		err = -ENOMEM;
+		goto unregister_intf;
+	}
+
 	return 0;
+
+unregister_intf:
+	cpc_interface_unregister(intf);
+
+	return err;
 }
 
 static int cpc_intf_unregister_ep(struct device *dev, void *null)
-- 
2.49.0