John Snow 3bcbe4aa80 ahci: check for ncq prdtl overflow
Don't attempt the NCQ transfer if the PRDT we were given is not big
enough to perform the entire transfer.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435016308-6150-5-git-send-email-jsnow@redhat.com
2015-07-04 02:06:03 -04:00
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