Merge tag 'staging-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver tree changes from Greg KH:
 "Here's the big drivers/staging/ update for 3.14-rc1

  Lots and lots of cleanups, IIO driver updates are also mixed in here
  due to the subsystem still crossing staging and drivers/iio/, and the
  dwc2 driver is moved out of staging.  There's a new driver (rts5208),
  which ends up making us adding more lines than removing, but overall
  there was lots of work toward moving code out of here, which was good

  All of this has been in linux-next with no reported issues"

* tag 'staging-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1084 commits)
  lustre: delete linux/lustre_debug.h
  staging: lustre: remove some unused debug macros
  usb: dwc2: move device tree bindings doc to correct place
  staging: vt6656: sparse fixes: iwctl_giwgenie use memcpy.
  staging: vt6656: sparse fixes: iwctl_siwgenie use memcpy.
  staging: vt6656: sparse fixes ethtool_ioctl Use struct ifreq *
  staging: vt6656: sparse fixes: dpc.c missing dpc.h
  staging: lustre: libcfs_debug: small whitespace cleanups
  staging: lustre: libcfs_debug.h: remove extra blank lines
  staging: lustre: libcfs_debug.h: Align backslashes in macros
  staging: lustre: libcfs_debug.h: align define values
  staging: tidspbridge: adjust error return code (bugfix)
  Staging: rts5139: rts51x_card: fixed style issues
  staging: wlags49_h2: Fix "do not use C99 //" in wl_cs.h, wl_enc.h wl_main.h and wl_wext.h
  Staging: rtl8188eu: Fixed "foo * bar" related coding style issues
  Staging: rtl8188eu: Fixed required spaces after ',' and around '=' and '=='
  staging: vt6655: Fix memory leak in wpa_ioctl()
  imx-drm: parallel-display: honor 'native-mode' property when selecting video mode from DT
  staging: drm/imx: don't drop crtc offsets when doing pageflip
  staging: drm/imx: handle framebuffer offsets correctly
  ...

1 files changed, 102 insertions, 0 deletions

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 18f72e3d0ed..acc911a836c 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -69,6 +69,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_ALTVOLTAGE] = "altvoltage",
 	[IIO_CCT] = "cct",
 	[IIO_PRESSURE] = "pressure",
+	[IIO_HUMIDITYRELATIVE] = "humidityrelative",
 };
 
 static const char * const iio_modifier_names[] = {
@@ -107,6 +108,11 @@ static const char * const iio_chan_info_postfix[] = {
 	[IIO_CHAN_INFO_INT_TIME] = "integration_time",
 };
 
+/**
+ * iio_find_channel_from_si() - get channel from its scan index
+ * @indio_dev:		device
+ * @si:			scan index to match
+ */
 const struct iio_chan_spec
 *iio_find_channel_from_si(struct iio_dev *indio_dev, int si)
 {
@@ -922,6 +928,10 @@ struct device_type iio_device_type = {
 	.release = iio_dev_release,
 };
 
+/**
+ * iio_device_alloc() - allocate an iio_dev from a driver
+ * @sizeof_priv:	Space to allocate for private structure.
+ **/
 struct iio_dev *iio_device_alloc(int sizeof_priv)
 {
 	struct iio_dev *dev;
@@ -962,6 +972,10 @@ struct iio_dev *iio_device_alloc(int sizeof_priv)
 }
 EXPORT_SYMBOL(iio_device_alloc);
 
+/**
+ * iio_device_free() - free an iio_dev from a driver
+ * @dev:		the iio_dev associated with the device
+ **/
 void iio_device_free(struct iio_dev *dev)
 {
 	if (dev)
@@ -984,6 +998,20 @@ static int devm_iio_device_match(struct device *dev, void *res, void *data)
 	return *r == data;
 }
 
+/**
+ * devm_iio_device_alloc - Resource-managed iio_device_alloc()
+ * @dev:		Device to allocate iio_dev for
+ * @sizeof_priv:	Space to allocate for private structure.
+ *
+ * Managed iio_device_alloc. iio_dev allocated with this function is
+ * automatically freed on driver detach.
+ *
+ * If an iio_dev allocated with this function needs to be freed separately,
+ * devm_iio_device_free() must be used.
+ *
+ * RETURNS:
+ * Pointer to allocated iio_dev on success, NULL on failure.
+ */
 struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv)
 {
 	struct iio_dev **ptr, *iio_dev;
@@ -1006,6 +1034,13 @@ struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv)
 }
 EXPORT_SYMBOL_GPL(devm_iio_device_alloc);
 
+/**
+ * devm_iio_device_free - Resource-managed iio_device_free()
+ * @dev:		Device this iio_dev belongs to
+ * @iio_dev:		the iio_dev associated with the device
+ *
+ * Free iio_dev allocated with devm_iio_device_alloc().
+ */
 void devm_iio_device_free(struct device *dev, struct iio_dev *iio_dev)
 {
 	int rc;
@@ -1080,6 +1115,10 @@ static const struct file_operations iio_buffer_fileops = {
 
 static const struct iio_buffer_setup_ops noop_ring_setup_ops;
 
+/**
+ * iio_device_register() - register a device with the IIO subsystem
+ * @indio_dev:		Device structure filled by the device driver
+ **/
 int iio_device_register(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -1141,6 +1180,10 @@ error_ret:
 }
 EXPORT_SYMBOL(iio_device_register);
 
+/**
+ * iio_device_unregister() - unregister a device from the IIO subsystem
+ * @indio_dev:		Device structure representing the device.
+ **/
 void iio_device_unregister(struct iio_dev *indio_dev)
 {
 	mutex_lock(&indio_dev->info_exist_lock);
@@ -1161,6 +1204,65 @@ void iio_device_unregister(struct iio_dev *indio_dev)
 	mutex_unlock(&indio_dev->info_exist_lock);
 }
 EXPORT_SYMBOL(iio_device_unregister);
+
+static void devm_iio_device_unreg(struct device *dev, void *res)
+{
+	iio_device_unregister(*(struct iio_dev **)res);
+}
+
+/**
+ * devm_iio_device_register - Resource-managed iio_device_register()
+ * @dev:	Device to allocate iio_dev for
+ * @indio_dev:	Device structure filled by the device driver
+ *
+ * Managed iio_device_register.  The IIO device registered with this
+ * function is automatically unregistered on driver detach. This function
+ * calls iio_device_register() internally. Refer to that function for more
+ * information.
+ *
+ * If an iio_dev registered with this function needs to be unregistered
+ * separately, devm_iio_device_unregister() must be used.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev)
+{
+	struct iio_dev **ptr;
+	int ret;
+
+	ptr = devres_alloc(devm_iio_device_unreg, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return -ENOMEM;
+
+	*ptr = indio_dev;
+	ret = iio_device_register(indio_dev);
+	if (!ret)
+		devres_add(dev, ptr);
+	else
+		devres_free(ptr);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(devm_iio_device_register);
+
+/**
+ * devm_iio_device_unregister - Resource-managed iio_device_unregister()
+ * @dev:	Device this iio_dev belongs to
+ * @indio_dev:	the iio_dev associated with the device
+ *
+ * Unregister iio_dev registered with devm_iio_device_register().
+ */
+void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev)
+{
+	int rc;
+
+	rc = devres_release(dev, devm_iio_device_unreg,
+			    devm_iio_device_match, indio_dev);
+	WARN_ON(rc);
+}
+EXPORT_SYMBOL_GPL(devm_iio_device_unregister);
+
 subsys_initcall(iio_init);
 module_exit(iio_exit);