Implement a simple abort handler. The host does not support "Abort"; just
ensure that all inflight I/Os have been accounted for.

Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
---
 drivers/scsi/storvsc_drv.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 8f1b263..82fb590 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1524,6 +1524,27 @@ static int storvsc_host_reset_handler(struct scsi_cmnd 
*scmnd)
        return SUCCESS;
 }
 
+static int storvsc_host_abort_handler(struct scsi_cmnd *scmnd)
+{
+       struct hv_host_device *host_dev = shost_priv(scmnd->device->host);
+       struct hv_device *device = host_dev->dev;
+
+       struct storvsc_device *stor_device;
+
+
+       stor_device = get_out_stor_device(device);
+       if (!stor_device)
+               return FAILED;
+
+       /*
+        * Just wait for all in flight I/O's to complete.
+        */
+
+       storvsc_wait_to_drain(stor_device);
+
+       return SUCCESS;
+}
+
 static bool storvsc_scsi_cmd_ok(struct scsi_cmnd *scmnd)
 {
        bool allowed = true;
@@ -1699,6 +1720,7 @@ static struct scsi_host_template scsi_driver = {
        .bios_param =           storvsc_get_chs,
        .queuecommand =         storvsc_queuecommand,
        .eh_host_reset_handler =        storvsc_host_reset_handler,
+       .eh_abort_handler =     storvsc_host_abort_handler,
        .slave_alloc =          storvsc_device_alloc,
        .slave_destroy =        storvsc_device_destroy,
        .slave_configure =      storvsc_device_configure,
-- 
1.7.4.1

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