• Helge Deller's avatar
    hil/parisc: Disable HIL driver when it gets stuck · 879bc2d2
    Helge Deller authored
    When starting a HP machine with HIL driver but without an HIL keyboard
    or HIL mouse attached, it may happen that data written to the HIL loop
    gets stuck (e.g. because the transaction queue is full).  Usually one
    will then have to reboot the machine because all you see is and endless
    output of:
     Transaction add failed: transaction already queued?
    
    In the higher layers hp_sdc_enqueue_transaction() is called to queued up
    a HIL packet. This function returns an error code, and this patch adds
    the necessary checks for this return code and disables the HIL driver if
    further packets can't be sent.
    
    Tested on a HP 730 and a HP 715/64 machine.
    Signed-off-by: default avatarHelge Deller <deller@gmx.de>
    Cc: <stable@vger.kernel.org>
    879bc2d2
hp_sdc_mlc.c 9.1 KB