[SCSI] qla2xxx: Acquire hardware lock while manipulating dsd list.
The dsd list shouldn't be manipulated without taking the per host hardware lock to prevent multiple callers from trampling upon one another. Signed-off-by: NSaurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: NChad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>
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