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    Subject[228/262] hpsa: add small delay when using PCI Power Management to reset for kump
    3.0-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Mike Miller <mike.miller@hp.com>

    commit c4853efec665134b2e6fc9c13447323240980351 upstream.

    The P600 requires a small delay when changing states. Otherwise we may think
    the board did not reset and we bail. This for kdump only and is particular
    to the P600.

    Signed-off-by: Mike Miller <mike.miller@hp.com>
    Signed-off-by: Jens Axboe <axboe@kernel.dk>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/scsi/hpsa.c | 7 +++++++
    1 file changed, 7 insertions(+)

    --- a/drivers/scsi/hpsa.c
    +++ b/drivers/scsi/hpsa.c
    @@ -3300,6 +3300,13 @@ static int hpsa_controller_hard_reset(st
    pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
    pmcsr |= PCI_D0;
    pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
    +
    + /*
    + * The P600 requires a small delay when changing states.
    + * Otherwise we may think the board did not reset and we bail.
    + * This for kdump only and is particular to the P600.
    + */
    + msleep(500);
    }
    return 0;
    }



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