ar71xx: fix wndr3700_board_detect for some NETGEAR WNDR3700v2 (again)

When fixing the model string for WNDR3700v2 which contain a model string
followed by 0xff in r46455, the match for other versions of the WNDR3700v2
which just contain lots of 0xff broke (as the 0xff $model is checked for
is stripped off).

Fix by stripping off non-printable characters only for the actual output
string, but not for the internal matching.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Backport of r47538

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@48088 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index af92b01..267e0b6 100755 (executable)
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -37,8 +37,9 @@ wndr3700_board_detect() {
                machine="NETGEAR WNDR3700"
                ;;
        "33373031")
-               # Use awk to remove everything after the first zero byte
-               model="$(ar71xx_get_mtd_offset_size_format art 41 32 %c | LC_CTYPE=C awk -v 'FS=[^[:print:]]' '{print $1; exit}')"
+               model="$(ar71xx_get_mtd_offset_size_format art 41 32 %c)"
+               # Use awk to remove everything unprintable
+               model_stripped="$(echo -n "$model" | LC_CTYPE=C awk -v 'FS=[^[:print:]]' '{print $1; exit}')"
                case $model in
                $'\xff'*)
                        if [ "${model:24:1}" = 'N' ]; then
@@ -48,14 +49,14 @@ wndr3700_board_detect() {
                        fi
                        ;;
                '29763654+16+64'*)
-                       machine="NETGEAR ${model:14}"
+                       machine="NETGEAR ${model_stripped:14}"
                        ;;
                '29763654+16+128'*)
-                       machine="NETGEAR ${model:15}"
+                       machine="NETGEAR ${model_stripped:15}"
                        ;;
                *)
                        # Unknown ID
-                       machine="NETGEAR $model"
+                       machine="NETGEAR ${model_stripped}"
                esac
        esac