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    usb gadget: issue notifications from ACM function · 1f1ba11b
    David Brownell 提交于
    Update the CDC-ACM gadget code to support the peripheral-to-host
    notifications when the tty is opened or closed, or issues a BREAK.
    The serial framework code calls new generic hooks; right now only
    CDC-ACM uses those hooks.  This resolves several REVISIT comments
    in the code.  (Based on a patch from Felipe Balbi.)
    
    Note that this doesn't expose USB_CDC_CAP_BRK to the host, since
    this code still rejects USB_CDC_REQ_SEND_BREAK control requests
    for host-to-peripheral BREAK signaling (received via /dev/ttyGS*).
    Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
    Cc: Felipe Balbi <felipe.balbi@nokia.com>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
    1f1ba11b
u_serial.c 33.2 KB