platform/x86/amd/hsmp: Change generic plat_dev name to hsmp_pdev

plat_dev is a commonly used variable name, since its made as extern now,
change it to more specific name.
Also change miscdevice hsmp_device to mdev.

Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20241021111428.2676884-7-suma.hegde@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

drivers/platform/x86/amd/hsmp/acpi.c

@@ -194,13 +194,13 @@ static int hsmp_read_acpi_crs(struct hsmp_socket *sock)
 /* Parse the ACPI table to read the data */
 static int hsmp_parse_acpi_table(struct device *dev, u16 sock_ind)
 {
-	struct hsmp_socket *sock = &plat_dev.sock[sock_ind];
+	struct hsmp_socket *sock = &hsmp_pdev.sock[sock_ind];
 	int ret;
 
 	sock->sock_ind		= sock_ind;
 	sock->dev		= dev;
 	sock->amd_hsmp_rdwr	= amd_hsmp_acpi_rdwr;
-	plat_dev.is_acpi_device	= true;
+	hsmp_pdev.is_acpi_device	= true;
 
 	sema_init(&sock->hsmp_sem, 1);
 
@@ -244,7 +244,7 @@ int init_acpi(struct device *dev)
 	ret = hsmp_get_uid(dev, &sock_ind);
 	if (ret)
 		return ret;
-	if (sock_ind >= plat_dev.num_sockets)
+	if (sock_ind >= hsmp_pdev.num_sockets)
 		return -EINVAL;
 
 	ret = hsmp_parse_acpi_table(dev, sock_ind);

drivers/platform/x86/amd/hsmp/hsmp.c

@@ -39,7 +39,7 @@
 #define HSMP_WR			true
 #define HSMP_RD			false
 
-struct hsmp_plat_device plat_dev;
+struct hsmp_plat_device hsmp_pdev;
 
 /*
  * Send a message to the HSMP port via PCI-e config space registers
@@ -176,9 +176,9 @@ int hsmp_send_message(struct hsmp_message *msg)
 	if (ret)
 		return ret;
 
-	if (!plat_dev.sock || msg->sock_ind >= plat_dev.num_sockets)
+	if (!hsmp_pdev.sock || msg->sock_ind >= hsmp_pdev.num_sockets)
 		return -ENODEV;
-	sock = &plat_dev.sock[msg->sock_ind];
+	sock = &hsmp_pdev.sock[msg->sock_ind];
 
 	/*
 	 * The time taken by smu operation to complete is between
@@ -219,7 +219,7 @@ int hsmp_test(u16 sock_ind, u32 value)
 
 	/* Check the response value */
 	if (msg.args[0] != (value + 1)) {
-		dev_err(plat_dev.sock[sock_ind].dev,
+		dev_err(hsmp_pdev.sock[sock_ind].dev,
 			"Socket %d test message failed, Expected 0x%08X, received 0x%08X\n",
 			sock_ind, (value + 1), msg.args[0]);
 		return -EBADE;
@@ -320,7 +320,7 @@ ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
 
 static int hsmp_get_tbl_dram_base(u16 sock_ind)
 {
-	struct hsmp_socket *sock = &plat_dev.sock[sock_ind];
+	struct hsmp_socket *sock = &hsmp_pdev.sock[sock_ind];
 	struct hsmp_message msg = { 0 };
 	phys_addr_t dram_addr;
 	int ret;
@@ -354,25 +354,25 @@ static int hsmp_get_tbl_dram_base(u16 sock_ind)
 umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
 				  struct bin_attribute *battr, int id)
 {
-	if (plat_dev.proto_ver == HSMP_PROTO_VER6)
+	if (hsmp_pdev.proto_ver == HSMP_PROTO_VER6)
 		return battr->attr.mode;
 	else
 		return 0;
 }
 
 static int hsmp_init_metric_tbl_bin_attr(struct bin_attribute **hattrs, u16 sock_ind)
 {
-	struct bin_attribute *hattr = &plat_dev.sock[sock_ind].hsmp_attr;
+	struct bin_attribute *hattr = &hsmp_pdev.sock[sock_ind].hsmp_attr;
 
 	sysfs_bin_attr_init(hattr);
 	hattr->attr.name	= HSMP_METRICS_TABLE_NAME;
 	hattr->attr.mode	= 0444;
 	hattr->read		= hsmp_metric_tbl_read;
 	hattr->size		= sizeof(struct hsmp_metric_table);
-	hattr->private		= &plat_dev.sock[sock_ind];
+	hattr->private		= &hsmp_pdev.sock[sock_ind];
 	hattrs[0]		= hattr;
 
-	if (plat_dev.proto_ver == HSMP_PROTO_VER6)
+	if (hsmp_pdev.proto_ver == HSMP_PROTO_VER6)
 		return hsmp_get_tbl_dram_base(sock_ind);
 	else
 		return 0;
@@ -409,7 +409,7 @@ int hsmp_cache_proto_ver(u16 sock_ind)
 
 	ret = hsmp_send_message(&msg);
 	if (!ret)
-		plat_dev.proto_ver = msg.args[0];
+		hsmp_pdev.proto_ver = msg.args[0];
 
 	return ret;
 }
@@ -441,11 +441,11 @@ static int hsmp_pltdrv_probe(struct platform_device *pdev)
 	 * Hence allocate memory for all the sockets at once instead of allocating
 	 * on each probe.
 	 */
-	if (!plat_dev.is_probed) {
-		plat_dev.sock = devm_kcalloc(&pdev->dev, plat_dev.num_sockets,
-					     sizeof(*plat_dev.sock),
-					     GFP_KERNEL);
-		if (!plat_dev.sock)
+	if (!hsmp_pdev.is_probed) {
+		hsmp_pdev.sock = devm_kcalloc(&pdev->dev, hsmp_pdev.num_sockets,
+					      sizeof(*hsmp_pdev.sock),
+					      GFP_KERNEL);
+		if (!hsmp_pdev.sock)
 			return -ENOMEM;
 	}
 	if (check_acpi_support(&pdev->dev)) {
@@ -468,19 +468,19 @@ static int hsmp_pltdrv_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev, "Failed to create HSMP sysfs interface\n");
 	}
 
-	if (!plat_dev.is_probed) {
-		plat_dev.hsmp_device.name	= HSMP_CDEV_NAME;
-		plat_dev.hsmp_device.minor	= MISC_DYNAMIC_MINOR;
-		plat_dev.hsmp_device.fops	= &hsmp_fops;
-		plat_dev.hsmp_device.parent	= &pdev->dev;
-		plat_dev.hsmp_device.nodename	= HSMP_DEVNODE_NAME;
-		plat_dev.hsmp_device.mode	= 0644;
+	if (!hsmp_pdev.is_probed) {
+		hsmp_pdev.mdev.name	= HSMP_CDEV_NAME;
+		hsmp_pdev.mdev.minor	= MISC_DYNAMIC_MINOR;
+		hsmp_pdev.mdev.fops	= &hsmp_fops;
+		hsmp_pdev.mdev.parent	= &pdev->dev;
+		hsmp_pdev.mdev.nodename	= HSMP_DEVNODE_NAME;
+		hsmp_pdev.mdev.mode	= 0644;
 
-		ret = misc_register(&plat_dev.hsmp_device);
+		ret = misc_register(&hsmp_pdev.mdev);
 		if (ret)
 			return ret;
 
-		plat_dev.is_probed = true;
+		hsmp_pdev.is_probed = true;
 	}
 
 	return 0;
@@ -493,9 +493,9 @@ static void hsmp_pltdrv_remove(struct platform_device *pdev)
 	 * We register only one misc_device even on multi socket system.
 	 * So, deregister should happen only once.
 	 */
-	if (plat_dev.is_probed) {
-		misc_deregister(&plat_dev.hsmp_device);
-		plat_dev.is_probed = false;
+	if (hsmp_pdev.is_probed) {
+		misc_deregister(&hsmp_pdev.mdev);
+		hsmp_pdev.is_probed = false;
 	}
 }
 
@@ -567,15 +567,15 @@ static int __init hsmp_plt_init(void)
 	 * amd_nb_num() returns number of SMN/DF interfaces present in the system
 	 * if we have N SMN/DF interfaces that ideally means N sockets
 	 */
-	plat_dev.num_sockets = amd_nb_num();
-	if (plat_dev.num_sockets == 0 || plat_dev.num_sockets > MAX_AMD_SOCKETS)
+	hsmp_pdev.num_sockets = amd_nb_num();
+	if (hsmp_pdev.num_sockets == 0 || hsmp_pdev.num_sockets > MAX_AMD_SOCKETS)
 		return ret;
 
 	ret = platform_driver_register(&amd_hsmp_driver);
 	if (ret)
 		return ret;
 
-	if (!plat_dev.is_acpi_device) {
+	if (!hsmp_pdev.is_acpi_device) {
 		if (legacy_hsmp_support()) {
 			/* Not ACPI device, but supports HSMP, register a plat_dev */
 			ret = hsmp_plat_dev_register();

drivers/platform/x86/amd/hsmp/hsmp.h

@@ -48,15 +48,15 @@ struct hsmp_socket {
 };
 
 struct hsmp_plat_device {
-	struct miscdevice hsmp_device;
+	struct miscdevice mdev;
 	struct hsmp_socket *sock;
 	u32 proto_ver;
 	u16 num_sockets;
 	bool is_acpi_device;
 	bool is_probed;
 };
 
-extern struct hsmp_plat_device plat_dev;
+extern struct hsmp_plat_device hsmp_pdev;
 
 ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
 			     struct bin_attribute *bin_attr, char *buf,

drivers/platform/x86/amd/hsmp/plat.c

@@ -56,21 +56,21 @@ int hsmp_create_non_acpi_sysfs_if(struct device *dev)
 	struct attribute_group *attr_grp;
 	u16 i;
 
-	hsmp_attr_grps = devm_kcalloc(dev, plat_dev.num_sockets + 1,
+	hsmp_attr_grps = devm_kcalloc(dev, hsmp_pdev.num_sockets + 1,
 				      sizeof(*hsmp_attr_grps),
 				      GFP_KERNEL);
 	if (!hsmp_attr_grps)
 		return -ENOMEM;
 
 	/* Create a sysfs directory for each socket */
-	for (i = 0; i < plat_dev.num_sockets; i++) {
+	for (i = 0; i < hsmp_pdev.num_sockets; i++) {
 		attr_grp = devm_kzalloc(dev, sizeof(struct attribute_group),
 					GFP_KERNEL);
 		if (!attr_grp)
 			return -ENOMEM;
 
-		snprintf(plat_dev.sock[i].name, HSMP_ATTR_GRP_NAME_SIZE, "socket%u", (u8)i);
-		attr_grp->name			= plat_dev.sock[i].name;
+		snprintf(hsmp_pdev.sock[i].name, HSMP_ATTR_GRP_NAME_SIZE, "socket%u", (u8)i);
+		attr_grp->name			= hsmp_pdev.sock[i].name;
 		attr_grp->is_bin_visible	= hsmp_is_sock_attr_visible;
 		hsmp_attr_grps[i]		= attr_grp;
 
@@ -93,10 +93,10 @@ int init_platform_device(struct device *dev)
 	struct hsmp_socket *sock;
 	int ret, i;
 
-	for (i = 0; i < plat_dev.num_sockets; i++) {
+	for (i = 0; i < hsmp_pdev.num_sockets; i++) {
 		if (!node_to_amd_nb(i))
 			return -ENODEV;
-		sock = &plat_dev.sock[i];
+		sock = &hsmp_pdev.sock[i];
 		sock->root			= node_to_amd_nb(i)->root;
 		sock->sock_ind			= i;
 		sock->dev			= dev;