1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 5574520bf1c2..eb604b0a8990 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -39,6 +39,7 @@
 #include <scsi/scsi.h>
 #include "scsi.h"
 #include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
 #include <linux/libata.h>
 #include <linux/hdreg.h>
 #include <asm/uaccess.h>
@@ -2415,8 +2416,12 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
         struct ata_port *ap;
         struct ata_device *dev;
         struct scsi_device *scsidev = cmd->device;
+        struct Scsi_Host *shost = scsidev->host;
 
-        ap = (struct ata_port *) &scsidev->host->hostdata[0];
+        ap = (struct ata_port *) &shost->hostdata[0];
+
+        spin_unlock(shost->host_lock);
+        spin_lock(&ap->host_set->lock);
 
         ata_scsi_dump_cdb(ap, cmd);
 
@@ -2439,6 +2444,8 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
                 ata_scsi_translate(ap, dev, cmd, done, atapi_xlat);
 
 out_unlock:
+        spin_unlock(&ap->host_set->lock);
+        spin_lock(shost->host_lock);
         return 0;
 }