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-rw-r--r--package/base-files/files/lib/upgrade/nand.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/package/base-files/files/lib/upgrade/nand.sh b/package/base-files/files/lib/upgrade/nand.sh
index 2b766480d7..faeb3d6fc1 100644
--- a/package/base-files/files/lib/upgrade/nand.sh
+++ b/package/base-files/files/lib/upgrade/nand.sh
@@ -118,7 +118,7 @@ nand_upgrade_prepare_ubi() {
local rootfs_length="$1"
local rootfs_type="$2"
local rootfs_data_max="$(fw_printenv -n rootfs_data_max 2>/dev/null)"
- [ -n "$rootfs_data_max" ] && rootfs_data_max=$(($rootfs_data_max))
+ [ -n "$rootfs_data_max" ] && rootfs_data_max=$((rootfs_data_max))
local kernel_length="$3"
local has_env="${4:-0}"
@@ -195,7 +195,7 @@ nand_upgrade_prepare_ubi() {
if [ "$rootfs_type" != "ubifs" ]; then
local availeb=$(cat /sys/devices/virtual/ubi/$ubidev/avail_eraseblocks)
local ebsize=$(cat /sys/devices/virtual/ubi/$ubidev/eraseblock_size)
- local avail_size=$(( $availeb * $ebsize ))
+ local avail_size=$((availeb * ebsize))
local rootfs_data_size_param="-m"
if [ -n "$rootfs_data_max" ] &&
[ "$rootfs_data_max" != "0" ] &&