diff options
| author | Lan Tianyu <tianyu.lan@intel.com> | 2013-01-21 22:18:00 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-21 13:22:03 -0800 |
| commit | d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 (patch) | |
| tree | 2c48de8b3450bda69a6926e9e7e53b551a74a1b4 /drivers/usb/core/usb.h | |
| parent | 5c6e9bf011bca072648017477b0fe36402be1415 (diff) | |
USB: Set usb port's DeviceRemovable according acpi information
ACPI provide "_PLD" and "_UPC" aml methods to describe usb port
visibility and connectability. This patch is to add usb_hub_adjust_DeviceRemovable()
to adjust usb hub port's DeviceRemovable according ACPI information and invoke it in
the rh_call_control(). When hub descriptor request is issued at first time,
usb port device isn't created and usb port is not bound with acpi. So first
hub descriptor request is not changed based on ACPI information. After usb
port devices being created, call usb_hub_adjust_DeviceRemovable in the hub_configure()
and then set hub port's DeviceRemovable according ACPI information and this also works
for non-root hub.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/usb.h')
| -rw-r--r-- | drivers/usb/core/usb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index fb7d8fcb4551..a7f20bde0e5e 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -1,6 +1,7 @@ #include <linux/pm.h> #include <linux/acpi.h> +struct usb_hub_descriptor; struct dev_state; /* Functions local to drivers/usb/core/ */ @@ -182,6 +183,8 @@ extern enum usb_port_connect_type usb_get_hub_port_connect_type(struct usb_device *hdev, int port1); extern void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, enum usb_port_connect_type type); +extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, + struct usb_hub_descriptor *desc); #ifdef CONFIG_ACPI extern int usb_acpi_register(void); |