hw_vars: fix illegal shm_size in dash

/lkp/lkp/src/tests/vm-scalability: 28: /lkp/lkp/src/tests/vm-scalability: Illegal number: 16466156*4096

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw_vars b/hw_vars
index d5bcef7..ce7fcc8 100755
--- a/hw_vars
+++ b/hw_vars
@@ -25,7 +25,7 @@ mount_tmpfs()
 	$CMD mount -t tmpfs -o size=100% vm-scalability-tmp $TMPFS_MNT
 
 	shm_size=$(/usr/bin/stat -f -c "%b*%S" $TMPFS_MNT)
-	export shm_size=$((shm_size))
+	export shm_size=$(($shm_size))
 }
 
 create_loop_devices()