device: Return speed only if a valid (positive) value

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/functions/functions.device b/src/functions/functions.device
index 5500dc8739b841ec273880db05e914f459e4d858..008891d4eab06b2a0d3033324e60d48c882024a7 100644 (file)
--- a/src/functions/functions.device
+++ b/src/functions/functions.device
@@ -860,7 +860,12 @@ device_get_tx_errors() {
 device_get_speed() {
        local device=${1}
 
-       __device_get_file ${device} speed
+       local speed=$(__device_get_file ${device} speed)
+
+       # Don't return anything for negative values
+       [ ${speed} -lt 0 ] && return ${EXIT_ERROR}
+
+       print "${speed}"
 }
 
 device_get_duplex() {