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USB: composite: Add usb_composite_force_reset utility to force enumeration

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Use this rather than calling usb_gadget_disconnect and usb_gadget_connect
directly to avoid sending USB disconnect events to userspace when resetting
the bus.

Signed-off-by: Mike Lockwood <lockwood@android.com>
This commit is contained in:
Mike Lockwood
2010-06-28 16:19:32 -04:00
committed by Colin Cross
parent 4a4414416d
commit 28acc1a88c
3 changed files with 33 additions and 11 deletions
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4
include/linux/usb/composite.h
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@@ -47,6 +47,7 @@
*/
#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */
struct usb_composite_dev;
struct usb_configuration;
/**
@@ -151,6 +152,7 @@ int usb_function_activate(struct usb_function *);
int usb_interface_id(struct usb_configuration *, struct usb_function *);
void usb_function_set_enabled(struct usb_function *, int);
void usb_composite_force_reset(struct usb_composite_dev *);
/**
* ep_choose - select descriptor endpoint at current device speed
@@ -372,6 +374,8 @@ struct usb_composite_dev {
spinlock_t lock;
struct switch_dev sdev;
/* used by usb_composite_force_reset to avoid signalling switch changes */
bool mute_switch;
struct work_struct switch_work;
};