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-rw-r--r--interface-definitions/interfaces-wirelessmodem.xml.in5
1 files changed, 4 insertions, 1 deletions
diff --git a/interface-definitions/interfaces-wirelessmodem.xml.in b/interface-definitions/interfaces-wirelessmodem.xml.in
index 6989dea1b..8b68594da 100644
--- a/interface-definitions/interfaces-wirelessmodem.xml.in
+++ b/interface-definitions/interfaces-wirelessmodem.xml.in
@@ -56,9 +56,12 @@
<description>TTY device name, regular serial port</description>
</valueHelp>
<valueHelp>
- <format>usbXbY.YpZ.Z</format>
+ <format>usbNbXpY</format>
<description>TTY device name, USB based</description>
</valueHelp>
+ <constraint>
+ <regex>^(ttyS[0-9]+|usb[0-9]+b.*)$</regex>
+ </constraint>
</properties>
</leafNode>
#include <include/interface-disable-link-detect.xml.i>