zram-swap: Shell cosmetic

Signed-off-by: Samuel Casa <samuel.casa@neratec.com>
(backported from 65e9561b3d0546bfe6bad1840d81c0aa07b0c68d)

diff --git a/package/system/zram-swap/files/zram.init b/package/system/zram-swap/files/zram.init
index 17483c8fbcf4a4d33410abe7190385daaafb6d02..63a20479d1011b2665b1a76cfe54dbf1ccdab58e 100644 (file)
--- a/package/system/zram-swap/files/zram.init
+++ b/package/system/zram-swap/files/zram.init
@@ -16,7 +16,7 @@ zram_size()   # in megabytes
 
        if [ -z "$zram_size" ]; then
                # e.g. 6mb for 16mb-routers or 61mb for 128mb-routers
-               echo $(( $ram_size / 2048 ))
+               echo $(( ram_size / 2048 ))
        else
                echo "$zram_size"
        fi
@@ -72,7 +72,7 @@ zram_reset()
 list_cpu_idx()
 {
        # Offset by 1 if /dev/zram0 is in use by /tmp
-       if [ "$(mount | grep /dev/zram0)" ]; then
+       if mount | grep -q /dev/zram0; then
                local line i=1
                # Hot-add new ZRAM device (if necessary)
                if [ ! -b /dev/zram1 ]; then
@@ -86,7 +86,7 @@ list_cpu_idx()
                case "$line" in
                        [Pp]rocessor*)
                                echo $i
-                               i=$(( $i + 1 ))
+                               i=$(( i + 1 ))
                        ;;
                esac
        } done <"/proc/cpuinfo"
@@ -107,7 +107,7 @@ start()
                logger -s -t zram_start -p daemon.debug "activating '$zram_dev' for swapping ($zram_size MegaBytes)"
 
                zram_reset "$zram_dev" "enforcing defaults"
-               echo $(( $zram_size * 1024 * 1024 )) >"/sys/block/$( basename $zram_dev )/disksize"
+               echo $(( zram_size * 1024 * 1024 )) >"/sys/block/$( basename "$zram_dev" )/disksize"
                mkswap "$zram_dev"
                swapon "$zram_dev"
        } done