[libata passthru] address slave devices correctly
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 261be24..0df4b68 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -2276,6 +2276,12 @@
tf->device = scsicmd[8];
tf->command = scsicmd[9];
}
+ /*
+ * If slave is possible, enforce correct master/slave bit
+ */
+ if (qc->ap->flags & ATA_FLAG_SLAVE_POSS)
+ tf->device = qc->dev->devno ?
+ tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
/*
* Filter SET_FEATURES - XFER MODE command -- otherwise,
