Add the member platform_data in the usb_hub_port to store port's
platform related data. Provide usb_set_hub_port_platform_data() and
usb_get_hub_port_platform_data() to access the member.
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
drivers/usb/core/hub.c | 22 ++++++++++++++++++++++
drivers/usb/core/usb.h | 4 ++++
2 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 51bf5d4..ac7bd89 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -40,6 +40,7 @@
struct usb_hub_port {
void *port_owner;
struct usb_device *child;
+ unsigned long platform_data;
};
struct usb_hub {
@@ -4163,3 +4164,24 @@ int usb_get_hub_child_device(struct usb_device *hdev, int port1,
return 0;
}
+int usb_set_hub_port_platform_data(struct usb_device *hdev, int port1,
+ unsigned long data)
+{
+ struct usb_hub *hub = hdev_to_hub(hdev);
+
+ if (port1 > hdev->maxchild || port1 < 1)
+ return -EINVAL;
+ hub->port_data[port1 - 1].platform_data = data;
+ return 0;
+}
+
+int usb_get_hub_port_platform_data(struct usb_device *hdev, int port1,
+ unsigned long *data)
+{
+ struct usb_hub *hub = hdev_to_hub(hdev);
+
+ if (port1 > hdev->maxchild || port1 < 1)
+ return -EINVAL;
+ *data = hub->port_data[port1 - 1].platform_data;
+ return 0;
+}
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 636d98e..694c78d 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -154,6 +154,10 @@ extern void usb_notify_add_device(struct usb_device *udev);
extern void usb_notify_remove_device(struct usb_device *udev);
extern void usb_notify_add_bus(struct usb_bus *ubus);
extern void usb_notify_remove_bus(struct usb_bus *ubus);
+extern int usb_get_hub_port_platform_data(struct usb_device *hdev,
+ int port1, unsigned long *data);
+extern int usb_set_hub_port_platform_data(struct usb_device *hdev,
+ int port1, unsigned long data);
#ifdef CONFIG_ACPI
extern int usb_acpi_register(void);
--
1.7.6.rc2.8.g28eb
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