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authorJan Hoffmann <jan@3e8.eu>2022-04-25 21:52:39 +0200
committerDaniel Golle <daniel@makrotopia.org>2022-05-04 01:38:04 +0100
commitdb4bf4b968c0da035d98e7771fc993af9d6f742b (patch)
tree65351f19e1437b701d673290f962f39bbb475db7 /BSDmakefile
parent2f484aeff5fe5ba3a832f98ca409adde3257e832 (diff)
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ltq-vdsl/ltq-adsl: fix elapsed time calculation
The driver maintains elapsed times by repeatedly accumulating the time since the previous update in a loop. For the elapsed showtime time, the time difference is truncated to seconds before adding it, leading to a sizable error over time. Move the truncation to before calculation of the time difference in order to remove this error. Also maintain the total elapsed time in the same way in full seconds, to prevent the unsigned 32-bit counter from wrapping around after about 50 days. Testing on a VR9 device shows that the reported line uptime now matches the actual elapsed wall time. The ADSL variant is only compile-tested, but it should also work as the relevant code is identical. Signed-off-by: Jan Hoffmann <jan@3e8.eu> Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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