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-rw-r--r--drivers/usb/common/common.c25
-rw-r--r--drivers/usb/core/of.c26
2 files changed, 25 insertions, 26 deletions
diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index 50a2362ed3ea..48277bbc15e4 100644
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -246,6 +246,31 @@ int of_usb_update_otg_caps(struct device_node *np,
246} 246}
247EXPORT_SYMBOL_GPL(of_usb_update_otg_caps); 247EXPORT_SYMBOL_GPL(of_usb_update_otg_caps);
248 248
249/**
250 * usb_of_get_companion_dev - Find the companion device
251 * @dev: the device pointer to find a companion
252 *
253 * Find the companion device from platform bus.
254 *
255 * Takes a reference to the returned struct device which needs to be dropped
256 * after use.
257 *
258 * Return: On success, a pointer to the companion device, %NULL on failure.
259 */
260struct device *usb_of_get_companion_dev(struct device *dev)
261{
262 struct device_node *node;
263 struct platform_device *pdev = NULL;
264
265 node = of_parse_phandle(dev->of_node, "companion", 0);
266 if (node)
267 pdev = of_find_device_by_node(node);
268
269 of_node_put(node);
270
271 return pdev ? &pdev->dev : NULL;
272}
273EXPORT_SYMBOL_GPL(usb_of_get_companion_dev);
249#endif 274#endif
250 275
251MODULE_LICENSE("GPL"); 276MODULE_LICENSE("GPL");
diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
index fd77442c2d12..651708d8c908 100644
--- a/drivers/usb/core/of.c
+++ b/drivers/usb/core/of.c
@@ -105,29 +105,3 @@ usb_of_get_interface_node(struct usb_device *udev, u8 config, u8 ifnum)
105 return NULL; 105 return NULL;
106} 106}
107EXPORT_SYMBOL_GPL(usb_of_get_interface_node); 107EXPORT_SYMBOL_GPL(usb_of_get_interface_node);
108
109/**
110 * usb_of_get_companion_dev - Find the companion device
111 * @dev: the device pointer to find a companion
112 *
113 * Find the companion device from platform bus.
114 *
115 * Takes a reference to the returned struct device which needs to be dropped
116 * after use.
117 *
118 * Return: On success, a pointer to the companion device, %NULL on failure.
119 */
120struct device *usb_of_get_companion_dev(struct device *dev)
121{
122 struct device_node *node;
123 struct platform_device *pdev = NULL;
124
125 node = of_parse_phandle(dev->of_node, "companion", 0);
126 if (node)
127 pdev = of_find_device_by_node(node);
128
129 of_node_put(node);
130
131 return pdev ? &pdev->dev : NULL;
132}
133EXPORT_SYMBOL_GPL(usb_of_get_companion_dev);