[SCSI] aacraid: Check for unlikely errors

Received from Mark Salyzyn

The enclosed patch cleans up some code fragments, adds some paranoia
(unproven causes of potential driver failures).

Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
3 files changed