char/misc patches for 4.12-rc1

Here is the big set of new char/misc driver drivers and features for
 4.12-rc1.
 
 There's lots of new drivers added this time around, new firmware drivers
 from Google, more auxdisplay drivers, extcon drivers, fpga drivers, and
 a bunch of other driver updates.  Nothing major, except if you happen to
 have the hardware for these drivers, and then you will be happy :)
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Merge tag 'char-misc-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of new char/misc driver drivers and features for
  4.12-rc1.

  There's lots of new drivers added this time around, new firmware
  drivers from Google, more auxdisplay drivers, extcon drivers, fpga
  drivers, and a bunch of other driver updates. Nothing major, except if
  you happen to have the hardware for these drivers, and then you will
  be happy :)

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (136 commits)
  firmware: google memconsole: Fix return value check in platform_memconsole_init()
  firmware: Google VPD: Fix return value check in vpd_platform_init()
  goldfish_pipe: fix build warning about using too much stack.
  goldfish_pipe: An implementation of more parallel pipe
  fpga fr br: update supported version numbers
  fpga: region: release FPGA region reference in error path
  fpga altera-hps2fpga: disable/unprepare clock on error in alt_fpga_bridge_probe()
  mei: drop the TODO from samples
  firmware: Google VPD sysfs driver
  firmware: Google VPD: import lib_vpd source files
  misc: lkdtm: Add volatile to intentional NULL pointer reference
  eeprom: idt_89hpesx: Add OF device ID table
  misc: ds1682: Add OF device ID table
  misc: tsl2550: Add OF device ID table
  w1: Remove unneeded use of assert() and remove w1_log.h
  w1: Use kernel common min() implementation
  uio_mf624: Align memory regions to page size and set correct offsets
  uio_mf624: Refactor memory info initialization
  uio: Allow handling of non page-aligned memory regions
  hangcheck-timer: Fix typo in comment
  ...

drivers/infiniband/core/ucm.c

@@ -1205,12 +1205,15 @@ static void ib_ucm_release_dev(struct device *dev)
 	struct ib_ucm_device *ucm_dev;
 
 	ucm_dev = container_of(dev, struct ib_ucm_device, dev);
-	cdev_del(&ucm_dev->cdev);
+	kfree(ucm_dev);
+}
+
+static void ib_ucm_free_dev(struct ib_ucm_device *ucm_dev)
+{
 	if (ucm_dev->devnum < IB_UCM_MAX_DEVICES)
 		clear_bit(ucm_dev->devnum, dev_map);
 	else
 		clear_bit(ucm_dev->devnum - IB_UCM_MAX_DEVICES, overflow_map);
-	kfree(ucm_dev);
 }
 
 static const struct file_operations ucm_fops = {
@@ -1266,7 +1269,9 @@ static void ib_ucm_add_one(struct ib_device *device)
 	if (!ucm_dev)
 		return;
 
+	device_initialize(&ucm_dev->dev);
 	ucm_dev->ib_dev = device;
+	ucm_dev->dev.release = ib_ucm_release_dev;
 
 	devnum = find_first_zero_bit(dev_map, IB_UCM_MAX_DEVICES);
 	if (devnum >= IB_UCM_MAX_DEVICES) {
@@ -1286,16 +1291,14 @@ static void ib_ucm_add_one(struct ib_device *device)
 	cdev_init(&ucm_dev->cdev, &ucm_fops);
 	ucm_dev->cdev.owner = THIS_MODULE;
 	kobject_set_name(&ucm_dev->cdev.kobj, "ucm%d", ucm_dev->devnum);
-	if (cdev_add(&ucm_dev->cdev, base, 1))
-		goto err;
 
 	ucm_dev->dev.class = &cm_class;
 	ucm_dev->dev.parent = device->dev.parent;
-	ucm_dev->dev.devt = ucm_dev->cdev.dev;
-	ucm_dev->dev.release = ib_ucm_release_dev;
+	ucm_dev->dev.devt = base;
+
 	dev_set_name(&ucm_dev->dev, "ucm%d", ucm_dev->devnum);
-	if (device_register(&ucm_dev->dev))
-		goto err_cdev;
+	if (cdev_device_add(&ucm_dev->cdev, &ucm_dev->dev))
+		goto err_devnum;
 
 	if (device_create_file(&ucm_dev->dev, &dev_attr_ibdev))
 		goto err_dev;
@@ -1304,15 +1307,11 @@ static void ib_ucm_add_one(struct ib_device *device)
 	return;
 
 err_dev:
-	device_unregister(&ucm_dev->dev);
-err_cdev:
-	cdev_del(&ucm_dev->cdev);
-	if (ucm_dev->devnum < IB_UCM_MAX_DEVICES)
-		clear_bit(devnum, dev_map);
-	else
-		clear_bit(devnum, overflow_map);
+	cdev_device_del(&ucm_dev->cdev, &ucm_dev->dev);
+err_devnum:
+	ib_ucm_free_dev(ucm_dev);
 err:
-	kfree(ucm_dev);
+	put_device(&ucm_dev->dev);
 	return;
 }
 
@@ -1323,7 +1322,9 @@ static void ib_ucm_remove_one(struct ib_device *device, void *client_data)
 	if (!ucm_dev)
 		return;
 
-	device_unregister(&ucm_dev->dev);
+	cdev_device_del(&ucm_dev->cdev, &ucm_dev->dev);
+	ib_ucm_free_dev(ucm_dev);
+	put_device(&ucm_dev->dev);
 }
 
 static CLASS_ATTR_STRING(abi_version, S_IRUGO,

drivers/infiniband/core/user_mad.c

@@ -1187,7 +1187,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
 
 	cdev_init(&port->cdev, &umad_fops);
 	port->cdev.owner = THIS_MODULE;
-	port->cdev.kobj.parent = &umad_dev->kobj;
+	cdev_set_parent(&port->cdev, &umad_dev->kobj);
 	kobject_set_name(&port->cdev.kobj, "umad%d", port->dev_num);
 	if (cdev_add(&port->cdev, base, 1))
 		goto err_cdev;
@@ -1206,7 +1206,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
 	base += IB_UMAD_MAX_PORTS;
 	cdev_init(&port->sm_cdev, &umad_sm_fops);
 	port->sm_cdev.owner = THIS_MODULE;
-	port->sm_cdev.kobj.parent = &umad_dev->kobj;
+	cdev_set_parent(&port->sm_cdev, &umad_dev->kobj);
 	kobject_set_name(&port->sm_cdev.kobj, "issm%d", port->dev_num);
 	if (cdev_add(&port->sm_cdev, base, 1))
 		goto err_sm_cdev;

drivers/infiniband/core/uverbs_main.c

@@ -1093,7 +1093,7 @@ static void ib_uverbs_add_one(struct ib_device *device)
 	cdev_init(&uverbs_dev->cdev, NULL);
 	uverbs_dev->cdev.owner = THIS_MODULE;
 	uverbs_dev->cdev.ops = device->mmap ? &uverbs_mmap_fops : &uverbs_fops;
-	uverbs_dev->cdev.kobj.parent = &uverbs_dev->kobj;
+	cdev_set_parent(&uverbs_dev->cdev, &uverbs_dev->kobj);
 	kobject_set_name(&uverbs_dev->cdev.kobj, "uverbs%d", uverbs_dev->devnum);
 	if (cdev_add(&uverbs_dev->cdev, base, 1))
 		goto err_cdev;

drivers/infiniband/hw/hfi1/device.c

@@ -69,7 +69,7 @@ int hfi1_cdev_init(int minor, const char *name,
 
 	cdev_init(cdev, fops);
 	cdev->owner = THIS_MODULE;
-	cdev->kobj.parent = parent;
+	cdev_set_parent(cdev, parent);
 	kobject_set_name(&cdev->kobj, name);
 
 	ret = cdev_add(cdev, dev, 1);