[libata] SCSI: clean up R/W recovery mode page

Clear ARRE, we don't do auto-reallocation on reads, just on writes.

Also, hardcode the size of the array using RW_RECOVERY_MPAGE_LEN,
following the style of the surrounding code.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/libata-scsi.c

@@ -71,11 +71,10 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
 #define ALL_SUB_MPAGES 0xff
 
 
-static const u8 def_rw_recovery_mpage[] = {
+static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = {
 	RW_RECOVERY_MPAGE,
 	RW_RECOVERY_MPAGE_LEN - 2,
-	(1 << 7) |	/* AWRE, sat-r06 say it shall be 0 */
-	    (1 << 6),	/* ARRE (auto read reallocation) */
+	(1 << 7),	/* AWRE */
 	0,		/* read retry count */
 	0, 0, 0, 0,
 	0,		/* write retry count */