diff --git a/0001-sg3_utils-1.37-rescan-downpress.patch b/0001-sg3_utils-1.37-rescan-downpress.patch
index 2426608..f44856e 100644
--- a/0001-sg3_utils-1.37-rescan-downpress.patch
+++ b/0001-sg3_utils-1.37-rescan-downpress.patch
@@ -1,17 +1,26 @@
+From faee7759e949f04f4555e9a84e7845d4299d94da Mon Sep 17 00:00:00 2001
+From: sunshihao <sunshihao@huawei.com>
+Date: Thu, 16 Apr 2020 10:48:26 +0800
+Subject: [PATCH 2/4] sg3_utils-1.37-rescan-downpress
+
+---
+ scripts/rescan-scsi-bus.sh | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
 diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
-index 16041ee..e411fd2 100755
+index 855cec9..b1cbebc 100755
 --- a/scripts/rescan-scsi-bus.sh
 +++ b/scripts/rescan-scsi-bus.sh
-@@ -713,6 +713,7 @@ findremapped()
+@@ -786,6 +786,7 @@ findremapped()
      rm -f $tmpfile
    fi
  
 +  echo -n "Triggering udev to update device information... "
    # Get all of the ID_SERIAL attributes, after finding their sd node
+   devs=$(ls /sys/class/scsi_device/)
    for hctl in $devs ; do
-     if [ -d /sys/class/scsi_device/$hctl/device/block ] ; then
-@@ -720,12 +721,14 @@ findremapped()
-       id_serial_old=`udevadm info -q all -n $sddev | grep "ID_SERIAL=" | cut -d"=" -f2`
+@@ -794,12 +795,14 @@ findremapped()
+       id_serial_old=$(udevadm info -q all -n "$sddev" | grep "ID_SERIAL=" | cut -d"=" -f2)
        [ -z "$id_serial_old" ] && id_serial_old="none"
        echo "$hctl $sddev $id_serial_old" >> $tmpfile
 +      udevadm trigger --name-match=$sddev
@@ -27,3 +36,6 @@ index 16041ee..e411fd2 100755
    udevadm_settle 2>&1 /dev/null
    echo "Done"
  
+-- 
+2.19.1
+