[SCSI] fix missing check for no scanning

Drivers that called scsi_scan_target() instead of scsi_scan_host() were
still adding devices; this needs to be under the control of userspace,
not the driver.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index d91d268dd331..3ccaa4be92d8 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1549,6 +1549,9 @@ void scsi_scan_target(struct device *parent, unsigned int channel,
 {
         struct Scsi_Host *shost = dev_to_shost(parent);
 
+        if (strncmp(scsi_scan_type, "none", 4) == 0)
+                return;
+
         if (!shost->async_scan)
                 scsi_complete_async_scans();