misc: tegra-throughput: avoid flooding warning msg
timediff value will overflow easily after put dc off
for a while since the data type of long is just 4bytes
for 32bit cpu. after timediff overflowed, uart will spew
out warning messages for a long time before the timediff
becomes > 0.
fixed this issue by resetting the last_flip time as soon
as overflow is occurred.
Bug
1302148
Bug
1293211
Bug
1283757
Bug
1282005
Change-Id: I527ddc1ed7850be3938f2341d7d1623ea4f22e76
Signed-off-by: David Pu <dpu@nvidia.com>
Reviewed-on: http://git-master/r/236192
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User