storvsc: use shost_for_each_device() instead of open coding

Comment in struct Scsi_Host says that drivers are not supposed to access
__devices directly. storvsc_host_scan() doesn't happen in irq context
so we can just use shost_for_each_device().

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Long Li <longli@microsoft.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 61f4855..dbc9d9a 100644 (file)
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -426,7 +426,6 @@ static void storvsc_host_scan(struct work_struct *work)
        struct storvsc_scan_work *wrk;
        struct Scsi_Host *host;
        struct scsi_device *sdev;
-       unsigned long flags;
 
        wrk = container_of(work, struct storvsc_scan_work, work);
        host = wrk->host;
@@ -443,14 +442,8 @@ static void storvsc_host_scan(struct work_struct *work)
         * may have been removed this way.
         */
        mutex_lock(&host->scan_mutex);
-       spin_lock_irqsave(host->host_lock, flags);
-       list_for_each_entry(sdev, &host->__devices, siblings) {
-               spin_unlock_irqrestore(host->host_lock, flags);
+       shost_for_each_device(sdev, host)
                scsi_test_unit_ready(sdev, 1, 1, NULL);
-               spin_lock_irqsave(host->host_lock, flags);
-               continue;
-       }
-       spin_unlock_irqrestore(host->host_lock, flags);
        mutex_unlock(&host->scan_mutex);
        /*
         * Now scan the host to discover LUNs that may have been added.