[Bug 590607] Re: rfkill hotkey does not switch off bluetooth on Dell Inspiron Mini

[Steve Conklin]

 SRU Justification:
    
    Impact:
    A type of Dell Inspiron Mini does not turn off bluetooth physically when
    pressing F2 (rfkill hotkey).
    
    Fix:
    Current kernel code expects hardware to handle the hard-rfkill switching
    spontaneously and only notify rfkill subsystem with the status change.
    This patch makes kernel to explicitly fire a SMI to switch on/off
    rfkill devices if BIOS reports that the hardware switch is not supported.
    
    This patch depends on the following sauce patch in lucid kernel so is not going upstream:
            UBUNTU: SAUCE: dell-laptop: Store the HW switch status internally rather than requerying every time
    
    Testcase:
    I tested the patch on a Dell Mini 10. It works smoothly.
    


** Changed in: linux (Ubuntu)
       Status: Triaged => In Progress

** Changed in: linux (Ubuntu)
       Status: In Progress => Fix Committed

** Changed in: linux (Ubuntu)
    Milestone: None => lucid-updates

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rfkill hotkey does not switch off bluetooth on Dell Inspiron Mini
https://bugs.launchpad.net/bugs/590607
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