ahci: factor out FIS decomposition from handle_cmd
In order to make handle_cmd more readable at the macro level, the details of how to decompose particular types of FIS packets are left to helper functions. In our case, the only type of FIS packet we currently expect to see is a Register H2D FIS packet, but the gory details of its decomposition are of no particular interest in handle_cmd. This patch keeps the receipt of FIS packets and the decomposition thereof separated to two different functions. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1415058979-16604-6-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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