acm:tty: prevent rx data discarded on throttled.

Bug 1357628

Change-Id: Ic51f72190e4a2dd9a24d3e39e18d17564134f79a
Signed-off-by: glei <glei@nvidia.com>
Reviewed-on: http://git-master/r/256626
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Neil Patel <neilp@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Steve Lin <stlin@nvidia.com>
2 files changed