[SCSI] libsas: fix leak of dev->sata_dev.identify_[packet_]device

These are never freed in the nominal path.  A domain_device has a
different lifetime than a sas_rphy we need a dev->rphy independent way
of identifying sata devices.
Reviewed-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/libsas/sas_discover.c

@@ -30,6 +30,7 @@
 
 #include <scsi/scsi_transport.h>
 #include <scsi/scsi_transport_sas.h>
+#include <scsi/sas_ata.h>
 #include "../scsi_sas_internal.h"
 
 /* ---------- Basic task processing for discovery purposes ---------- */
@@ -231,6 +232,11 @@ void sas_free_device(struct kref *kref)
 	if (dev->dev_type == EDGE_DEV || dev->dev_type == FANOUT_DEV)
 		kfree(dev->ex_dev.ex_phy);
 
+	if (dev_is_sata(dev)) {
+		kfree(dev->sata_dev.identify_device);
+		kfree(dev->sata_dev.identify_packet_device);
+	}
+
 	kfree(dev);
 }
 

include/scsi/sas_ata.h

@@ -32,7 +32,8 @@
 
 static inline int dev_is_sata(struct domain_device *dev)
 {
-	return (dev->rphy->identify.target_port_protocols & SAS_PROTOCOL_SATA);
+	return dev->dev_type == SATA_DEV || dev->dev_type == SATA_PM ||
+	       dev->dev_type == SATA_PM_PORT;
 }
 
 int sas_ata_init_host_and_port(struct domain_device *found_dev,