firmware: vpd: remove platform driver

There is no reason why VPD should register platform device and driver,
given that we do not use their respective kobjects to attach attributes,
nor do we need suspend/resume hooks, or any other features of device
core.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/firmware/google/vpd.c

@@ -22,8 +22,6 @@
 #include <linux/kobject.h>
 #include <linux/list.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 
@@ -279,47 +277,37 @@ static int vpd_sections_init(phys_addr_t physaddr)
 		ret = vpd_section_init("rw", &rw_vpd,
 				       physaddr + sizeof(struct vpd_cbmem) +
 				       header.ro_size, header.rw_size);
-		if (ret)
+		if (ret) {
+			vpd_section_destroy(&ro_vpd);
 			return ret;
+		}
 	}
 
 	return 0;
 }
 
-static int vpd_probe(struct platform_device *pdev)
-{
-	int ret;
-	struct lb_cbmem_ref entry;
-
-	ret = coreboot_table_find(CB_TAG_VPD, &entry, sizeof(entry));
-	if (ret)
-		return ret;
-
-	return vpd_sections_init(entry.cbmem_addr);
-}
-
-static struct platform_driver vpd_driver = {
-	.probe = vpd_probe,
-	.driver = {
-		.name = "vpd",
-	},
-};
-
 static int __init vpd_platform_init(void)
 {
-	struct platform_device *pdev;
-
-	pdev = platform_device_register_simple("vpd", -1, NULL, 0);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
+	struct lb_cbmem_ref entry;
+	int err;
 
 	vpd_kobj = kobject_create_and_add("vpd", firmware_kobj);
 	if (!vpd_kobj)
 		return -ENOMEM;
 
-	platform_driver_register(&vpd_driver);
+	err = coreboot_table_find(CB_TAG_VPD, &entry, sizeof(entry));
+	if (err)
+		goto err_kobject_put;
+
+	err = vpd_sections_init(entry.cbmem_addr);
+	if (err)
+		goto err_kobject_put;
 
 	return 0;
+
+err_kobject_put:
+	kobject_put(vpd_kobj);
+	return err;
 }
 
 static void __exit vpd_platform_exit(void)