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    Subject[PATCH v6 03/16] Drivers: hv: vmbus: skip VMBus initialization if Linux is root
    Date
    There is no VMBus and the other infrastructures initialized in
    hv_acpi_init when Linux is running as the root partition.

    Signed-off-by: Wei Liu <wei.liu@kernel.org>
    Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
    Reviewed-by: Michael Kelley <mikelley@microsoft.com>
    ---
    v3: Return 0 instead of -ENODEV.
    ---
    drivers/hv/vmbus_drv.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
    index 502f8cd95f6d..ee27b3670a51 100644
    --- a/drivers/hv/vmbus_drv.c
    +++ b/drivers/hv/vmbus_drv.c
    @@ -2620,6 +2620,9 @@ static int __init hv_acpi_init(void)
    if (!hv_is_hyperv_initialized())
    return -ENODEV;

    + if (hv_root_partition)
    + return 0;
    +
    init_completion(&probe_event);

    /*
    --
    2.20.1
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