PROBLEM:  (UVO88631, UTO101963, UTO101988) (PATCH ID: OSF445-056)
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This patch fixes a problem with the psiop driver that causes it to
fail when vdump is used. The following error is displayed:
    "vdump : unable to write to device".

The problem is that the commands are not being properly flushed to
the controller in all cases, therefore the method used to queue commands
up to the controller has been improved.