Merge request !1312 from 'fcc-unlock-grep-qi'

fcc-unlock: Case-insensitive grep for for 105b (MBIM) and 14c3 (AT)

https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/1312

data/dispatcher-fcc-unlock/105b

@@ -20,13 +20,10 @@ shift
 # second and next arguments are control port names
 for PORT in "$@"; do
   # match port type in Linux 5.14 and newer
-  grep -q MBIM "/sys/class/wwan/$PORT/type" 2>/dev/null && {
-    MBIM_PORT=$PORT
-    break
-  }
+  grep -q MBIM "/sys/class/wwan/$PORT/type" 2>/dev/null ||
   # match port name in Linux 5.13
-  echo "$PORT" | grep -q MBIM && {
-    MBIM_PORT=$PORT
+  echo "$PORT" | grep -qi MBIM && {
+    MBIM_PORT="$PORT"
     break
   }
 done

data/dispatcher-fcc-unlock/14c3

@@ -20,13 +20,10 @@ shift
 # second and next arguments are control port names
 for PORT in "$@"; do
   # match port type in Linux 5.14 and newer
-  grep -q AT "/sys/class/wwan/$PORT/type" 2>/dev/null && {
-    AT_PORT=$PORT
-    break
-  }
+  grep -q AT "/sys/class/wwan/$PORT/type" 2>/dev/null ||
   # match port name in Linux 5.13
-  echo "$PORT" | grep -q AT && {
-    AT_PORT=$PORT
+  echo "$PORT" | grep -qi AT && {
+    AT_PORT="$PORT"
     break
   }
 done
@@ -34,7 +31,7 @@ done
 # fail if no AT port exposed
 [ -n "$AT_PORT" ] || exit 2
 
-DEVICE=/dev/${AT_PORT}
+DEVICE="/dev/$AT_PORT"
 
 at_command() {
     exec 99<>"$DEVICE"