4 files changed, 39 insertions, 0 deletions

diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index e3a18e0ef276..dc1bcbe3b176 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -71,6 +71,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
 #include <linux/of.h>
+#include <linux/pm.h>
 #include <asm/firmware.h>
 #include <asm/vio.h>
 #include <scsi/scsi.h>
@@ -1991,6 +1992,19 @@ static int ibmvscsi_remove(struct vio_dev *vdev)
 }
 
 /**
+ * ibmvscsi_resume: Resume from suspend
+ * @dev:        device struct
+ *
+ * We may have lost an interrupt across suspend/resume, so kick the
+ * interrupt handler
+ */
+static int ibmvscsi_resume(struct device *dev)
+{
+        struct ibmvscsi_host_data *hostdata = dev_get_drvdata(dev);
+        return ibmvscsi_ops->resume(hostdata);
+}
+
+/**
  * ibmvscsi_device_table: Used by vio.c to match devices in the device tree we 
  * support.
  */
@@ -2000,6 +2014,10 @@ static struct vio_device_id ibmvscsi_device_table[] __devinitdata = {
 };
 MODULE_DEVICE_TABLE(vio, ibmvscsi_device_table);
 
+static struct dev_pm_ops ibmvscsi_pm_ops = {
+        .resume = ibmvscsi_resume
+};
+
 static struct vio_driver ibmvscsi_driver = {
         .id_table = ibmvscsi_device_table,
         .probe = ibmvscsi_probe,
@@ -2008,6 +2026,7 @@ static struct vio_driver ibmvscsi_driver = {
         .driver = {
                 .name = "ibmvscsi",
                 .owner = THIS_MODULE,
+                .pm = &ibmvscsi_pm_ops,
         }
 };
 
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h
index 76425303def0..9cb7c6a773e1 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.h
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.h
@@ -120,6 +120,7 @@ struct ibmvscsi_ops {
                                   struct ibmvscsi_host_data *hostdata);
         int (*send_crq)(struct ibmvscsi_host_data *hostdata,
                        u64 word1, u64 word2);
+        int (*resume) (struct ibmvscsi_host_data *hostdata);
 };
 
 extern struct ibmvscsi_ops iseriesvscsi_ops;
diff --git a/drivers/scsi/ibmvscsi/iseries_vscsi.c b/drivers/scsi/ibmvscsi/iseries_vscsi.c
index 0775fdee5fa8..f4776451a754 100644
--- a/drivers/scsi/ibmvscsi/iseries_vscsi.c
+++ b/drivers/scsi/ibmvscsi/iseries_vscsi.c
@@ -158,10 +158,16 @@ static int iseriesvscsi_send_crq(struct ibmvscsi_host_data *hostdata,
                                              0);
 }
 
+static int iseriesvscsi_resume(struct ibmvscsi_host_data *hostdata)
+{
+        return 0;
+}
+
 struct ibmvscsi_ops iseriesvscsi_ops = {
         .init_crq_queue = iseriesvscsi_init_crq_queue,
         .release_crq_queue = iseriesvscsi_release_crq_queue,
         .reset_crq_queue = iseriesvscsi_reset_crq_queue,
         .reenable_crq_queue = iseriesvscsi_reenable_crq_queue,
         .send_crq = iseriesvscsi_send_crq,
+        .resume = iseriesvscsi_resume,
 };
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
index 462a8574dad9..63a30cbbf9de 100644
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c
@@ -334,10 +334,23 @@ static int rpavscsi_reenable_crq_queue(struct crq_queue *queue,
         return rc;
 }
 
+/**
+ * rpavscsi_resume: - resume after suspend
+ * @hostdata:   ibmvscsi_host_data of host
+ *
+ */
+static int rpavscsi_resume(struct ibmvscsi_host_data *hostdata)
+{
+        vio_disable_interrupts(to_vio_dev(hostdata->dev));
+        tasklet_schedule(&hostdata->srp_task);
+        return 0;
+}
+
 struct ibmvscsi_ops rpavscsi_ops = {
         .init_crq_queue = rpavscsi_init_crq_queue,
         .release_crq_queue = rpavscsi_release_crq_queue,
         .reset_crq_queue = rpavscsi_reset_crq_queue,
         .reenable_crq_queue = rpavscsi_reenable_crq_queue,
         .send_crq = rpavscsi_send_crq,
+        .resume = rpavscsi_resume,
 };