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USB_EP_CLEAR_HALT(9) Kernel Mode Gadget API USB_EP_CLEAR_HALT(9)

NAME

usb_ep_clear_halt - clears endpoint halt, and resets toggle

SYNOPSIS

int usb_ep_clear_halt(struct usb_ep * ep);

ARGUMENTS

ep

the bulk or interrupt endpoint being reset

DESCRIPTION

Use this when responding to the standard usb “set interface” request, for endpoints that aren´t reconfigured, after clearing any other state in the endpoint´s i/o queue.

Returns zero, or a negative error code. On success, this call clears the underlying hardware state reflecting endpoint halt and data toggle. Note that some hardware can´t support this request (like pxa2xx_udc), and accordingly can´t correctly implement interface altsettings.

AUTHOR

David Brownell <dbrownell@users.sourceforge.net>

Author.

COPYRIGHT

May 2024 Kernel Hackers Manual 2.6.