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USB gadget: Handle endpoint requests at the function level

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Control requests targeted at an endpoint (that is sent to EP0 but
specifying the target endpoint address in wIndex) are dispatched to the
current configuration's setup callback, requiring all gadget drivers to
dispatch the requests to the correct function driver.

To avoid this, record which endpoints are used by each function in the
composite driver SET CONFIGURATION handler and dispatch requests
targeted at endpoints to the correct function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Laurent Pinchart 2009-10-21 00:03:38 +02:00 • committed by Greg Kroah-Hartman
parent 4de8405759
commit 5242658d1b
2 changed files with 47 additions and 8 deletions
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1
include/linux/usb/composite.h
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@ -127,6 +127,7 @@ struct usb_function {
/* private: */
/* internals */
struct list_head list;
DECLARE_BITMAP(endpoints, 32);
};
int usb_add_function(struct usb_configuration *, struct usb_function *);