• David Brownell's avatar
    usb gadget stack: remove usb_ep_*_buffer(), part 1 · 9d8bab58
    David Brownell authored
    Remove usb_ep_{alloc,free}_buffer() calls, for small dma-coherent buffers.
    This patch just removes the interface and its users; later patches will
    remove controller driver support.
      - This interface is invariably not implemented correctly in the
        controller drivers (e.g. using dma pools, a mechanism which
        post-dates the interface by several years).
      - At this point no gadget driver really *needs* to use it.  In
        current kernels, any driver that needs such a mechanism could
        allocate a dma pool themselves.
    Removing this interface is thus a simplification and improvement.
    Note that the gmidi.c driver had a bug in this area; fixed.
    Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>