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-rw-r--r--drivers/scsi/scsi_scan.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 14e635aa44c..13228312fc4 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -133,12 +133,10 @@ struct async_scan_data {
/**
* scsi_complete_async_scans - Wait for asynchronous scans to complete
*
- * Asynchronous scans add themselves to the scanning_hosts list. Once
- * that list is empty, we know that the scans are complete. Rather than
- * waking up periodically to check the state of the list, we pretend to be
- * a scanning task by adding ourselves at the end of the list and going to
- * sleep. When the task before us wakes us up, we take ourselves off the
- * list and return.
+ * When this function returns, any host which started scanning before
+ * this function was called will have finished its scan. Hosts which
+ * started scanning after this function was called may or may not have
+ * finished.
*/
int scsi_complete_async_scans(void)
{
@@ -171,6 +169,11 @@ int scsi_complete_async_scans(void)
spin_lock(&async_scan_lock);
list_del(&data->list);
+ if (!list_empty(&scanning_hosts)) {
+ struct async_scan_data *next = list_entry(scanning_hosts.next,
+ struct async_scan_data, list);
+ complete(&next->prev_finished);
+ }
done:
spin_unlock(&async_scan_lock);