[SCSI] SCSI core: Allow QUIESCE -> CANCEL sdev transition

We have to be able to remove SCSI devices even when they are suspended, so
QUIESCE -> CANCEL must be a legal state transition.  This patch (as727)
adds the transition to the state machine.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/scsi_lib.c

@@ -2026,6 +2026,7 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
 		switch (oldstate) {
 		case SDEV_CREATED:
 		case SDEV_RUNNING:
+		case SDEV_QUIESCE:
 		case SDEV_OFFLINE:
 		case SDEV_BLOCK:
 			break;