• David Brownell's avatar
    [PATCH] USB: usbcore blinkenlights · 9656974b
    David Brownell authored
    The per-port LEDs on the most USB 2.0 hubs are programmable.
    And the USB spec describes some ways to use them, blinking
    to alert users about hardware (amber) or software (green)
    problems.
    
    This patch is the infrastructure for that blinking.  And
    if you should happen to "modprobe usbcore blinkenlights",
    the LEDs will cycle through all the ports ... which is
    not a USB-standard mode, but it can certainly handy be
    handy as a system heartbeat visible across the room.
    9656974b
hub.c 37 KB