[SCSI] ibmvscsi: Add suspend/resume support
Adds support for resuming from suspend for IBM VSCSI devices. We may have
lost an interrupt over the suspend, so we just kick the interrupt handler
to process anything that is outstanding. We expect to find a transport event
indicating we need to reestablish our CRQ.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
index 462a857..63a30cb 100644
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c
@@ -334,10 +334,23 @@
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,
};