char: tile-srom: Add real platform bus parent

Add a real platform bus device as a parent for
the srom class devices, to prevent non-platform
devices hanging from the bus root.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c
index bd377472dcfb..02e76ac6d282 100644
--- a/drivers/char/tile-srom.c
+++ b/drivers/char/tile-srom.c
@@ -76,6 +76,7 @@ MODULE_LICENSE("GPL");
 
 static int srom_devs;                   /* Number of SROM partitions */
 static struct cdev srom_cdev;
+static struct platform_device *srom_parent;
 static struct class *srom_class;
 static struct srom_dev *srom_devices;
 
@@ -350,7 +351,7 @@ static int srom_setup_minor(struct srom_dev *srom, int index)
                        SROM_PAGE_SIZE_OFF, sizeof(srom->page_size)) < 0)
                 return -EIO;
 
-        dev = device_create(srom_class, &platform_bus,
+        dev = device_create(srom_class, &srom_parent->dev,
                             MKDEV(srom_major, index), srom, "%d", index);
         return PTR_ERR_OR_ZERO(dev);
 }
@@ -415,6 +416,13 @@ static int srom_init(void)
         if (result < 0)
                 goto fail_chrdev;
 
+        /* Create a parent device */
+        srom_parent = platform_device_register_simple("srom", -1, NULL, 0);
+        if (IS_ERR(srom_parent)) {
+                result = PTR_ERR(srom_parent);
+                goto fail_pdev;
+        }
+
         /* Create a sysfs class. */
         srom_class = class_create(THIS_MODULE, "srom");
         if (IS_ERR(srom_class)) {
@@ -438,6 +446,8 @@ fail_class:
                 device_destroy(srom_class, MKDEV(srom_major, i));
         class_destroy(srom_class);
 fail_cdev:
+        platform_device_unregister(srom_parent);
+fail_pdev:
         cdev_del(&srom_cdev);
 fail_chrdev:
         unregister_chrdev_region(dev, srom_devs);
@@ -454,6 +464,7 @@ static void srom_cleanup(void)
                 device_destroy(srom_class, MKDEV(srom_major, i));
         class_destroy(srom_class);
         cdev_del(&srom_cdev);
+        platform_device_unregister(srom_parent);
         unregister_chrdev_region(MKDEV(srom_major, 0), srom_devs);
         kfree(srom_devices);
 }