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91d977ced4
Fix miscellaneous issues seen during driver shutdown. o Make sure pointers are valid before accessing them. o Busy the GPU during channel timeout. o Cancel delayed work on channels. o Avoid access to channels that may have been freed. Bug 1816516 Bug 1807277 Change-Id: I62df40373fdfb1c4a011364e8c435176a08a7a96 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1250026 (cherry picked from commit 64a95fc96c8ef7c5af9c53c4bb3402626e0d2f60) Reviewed-on: http://git-master/r/1274474 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>