storvsc: Use the specified target ID in device lookup

The current code assumes that there is only one target in device lookup.
Fix this bug. This will alow us to correctly handle hot reomoval of
LUNs.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Alex Ng <alexng@microsoft.com>
Tested-by: Vivek Yadav <vyadav@microsoft.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 622f64a98a9e7f64e445579801b26f7b521d5fa9..132b16861954efbc547cadaaa1faf5cfe28b18b6 100644 (file)
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -478,19 +478,18 @@ struct hv_host_device {
 struct storvsc_scan_work {
        struct work_struct work;
        struct Scsi_Host *host;
-       uint lun;
+       u8 lun;
+       u8 tgt_id;
 };
 
 static void storvsc_device_scan(struct work_struct *work)
 {
        struct storvsc_scan_work *wrk;
-       uint lun;
        struct scsi_device *sdev;
 
        wrk = container_of(work, struct storvsc_scan_work, work);
-       lun = wrk->lun;
 
-       sdev = scsi_device_lookup(wrk->host, 0, 0, lun);
+       sdev = scsi_device_lookup(wrk->host, 0, wrk->tgt_id, wrk->lun);
        if (!sdev)
                goto done;
        scsi_rescan_device(&sdev->sdev_gendev);
@@ -541,7 +540,7 @@ static void storvsc_remove_lun(struct work_struct *work)
        if (!scsi_host_get(wrk->host))
                goto done;
 
-       sdev = scsi_device_lookup(wrk->host, 0, 0, wrk->lun);
+       sdev = scsi_device_lookup(wrk->host, 0, wrk->tgt_id, wrk->lun);
 
        if (sdev) {
                scsi_remove_device(sdev);
@@ -941,6 +940,7 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
 
        wrk->host = host;
        wrk->lun = vm_srb->lun;
+       wrk->tgt_id = vm_srb->target_id;
        INIT_WORK(&wrk->work, process_err_fn);
        schedule_work(&wrk->work);
 }