luci-app-statistics: adjust cpufreq graph for single/dual-core CPUs

The original data model definition assumed data from a quad-core CPU,
which caused errors with single- and dual-core processors.
Adjust the data model to work with also them.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

diff --git a/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/cpufreq.lua b/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/cpufreq.lua
index bd30ede..25a72d2 100644 (file)
--- a/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/cpufreq.lua
+++ b/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/cpufreq.lua
@@ -10,8 +10,8 @@ function rrdargs( graph, plugin, plugin_instance, dtype )
                vlabel = "Frequency (Hz)",
                number_format = "%3.2lf%s",
                data = {
-                       instances = {
-                               cpufreq = { "3", "2", "1", "0" }
+                       sources = {
+                               cpufreq = { "" }
                        },
                        options = {
                                cpufreq_0 = { color = "ff0000", title = "Core 0", noarea=true, overlay=true },