[PATCH] firmware: arm_scmi: Delete the meaningless scmi_bus_id.

[guomin_chen at sina.com]

From: guomin chen <guomin_chen at sina.com>

Currently, scmi_bus_id is only used to set scmi_dev.id,
which in turn sets the SCMI device name. After removing
scmi_bus_id, it is clearer and more meaningful to directly
use the input parameters name and protocol to set the SCMI
device name.

Signed-off-by: guomin chen <guomin_chen at sina.com>
---
 drivers/firmware/arm_scmi/bus.c    | 16 ++--------------
 drivers/firmware/arm_scmi/driver.c |  4 ++--
 2 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
index 157172a5f2b5..c4e013a77e33 100644
--- a/drivers/firmware/arm_scmi/bus.c
+++ b/drivers/firmware/arm_scmi/bus.c
@@ -20,7 +20,6 @@
 BLOCKING_NOTIFIER_HEAD(scmi_requested_devices_nh);
 EXPORT_SYMBOL_GPL(scmi_requested_devices_nh);
 
-static DEFINE_IDA(scmi_bus_id);
 
 static DEFINE_IDR(scmi_requested_devices);
 /* Protect access to scmi_requested_devices */
@@ -341,7 +340,6 @@ static void __scmi_device_destroy(struct scmi_device *scmi_dev)
 	if (scmi_dev->protocol_id == SCMI_PROTOCOL_SYSTEM)
 		atomic_set(&scmi_syspower_registered, 0);
 
-	ida_free(&scmi_bus_id, scmi_dev->id);
 	device_unregister(&scmi_dev->dev);
 }
 
@@ -349,7 +347,7 @@ static struct scmi_device *
 __scmi_device_create(struct device_node *np, struct device *parent,
 		     int protocol, const char *name)
 {
-	int id, retval;
+	int retval;
 	struct scmi_device *scmi_dev;
 
 	/*
@@ -387,20 +385,12 @@ __scmi_device_create(struct device_node *np, struct device *parent,
 		return NULL;
 	}
 
-	id = ida_alloc_min(&scmi_bus_id, 1, GFP_KERNEL);
-	if (id < 0) {
-		kfree_const(scmi_dev->name);
-		kfree(scmi_dev);
-		return NULL;
-	}
-
-	scmi_dev->id = id;
 	scmi_dev->protocol_id = protocol;
 	scmi_dev->dev.parent = parent;
 	device_set_node(&scmi_dev->dev, of_fwnode_handle(np));
 	scmi_dev->dev.bus = &scmi_bus_type;
 	scmi_dev->dev.release = scmi_device_release;
-	dev_set_name(&scmi_dev->dev, "scmi_dev.%d", id);
+	dev_set_name(&scmi_dev->dev, "scmi_dev.%s.%d", scmi_dev->name, protocol);
 
 	retval = device_register(&scmi_dev->dev);
 	if (retval)
@@ -413,7 +403,6 @@ __scmi_device_create(struct device_node *np, struct device *parent,
 	return scmi_dev;
 put_dev:
 	put_device(&scmi_dev->dev);
-	ida_free(&scmi_bus_id, id);
 	return NULL;
 }
 
@@ -526,7 +515,6 @@ static void __exit scmi_bus_exit(void)
 	 */
 	scmi_devices_unregister();
 	bus_unregister(&scmi_bus_type);
-	ida_destroy(&scmi_bus_id);
 }
 module_exit(scmi_bus_exit);
 
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 1b5fb2c4ce86..bbf1f05f2be3 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -2641,8 +2641,8 @@ static int scmi_chan_setup(struct scmi_info *info, struct device_node *of_node,
 	cinfo->max_msg_size = info->desc->max_msg_size;
 
 	/* Create a unique name for this transport device */
-	snprintf(name, 32, "__scmi_transport_device_%s_%02X",
-		 idx ? "rx" : "tx", prot_id);
+	snprintf(name, 32, "__scmi_transport_device_%s",
+		 idx ? "rx" : "tx");
 	/* Create a uniquely named, dedicated transport device for this chan */
 	tdev = scmi_device_create(of_node, info->dev, prot_id, name);
 	if (!tdev) {
-- 
2.47.1