Deepak Nibade 4d772455c5 gpu: nvgpu: skip channel abort for deferred reset ...

In case deferred_reset_pending is set in gk20a_fifo_handle_mmu_fault(), we skip
resetting the engines and skip setting the error notifier
Then we call gk20a_channel_abort()/gk20a_fifo_abort_tsg() which aborts the
channels, and resets the syncpoint values to release all the waiters

But since we don't set error notifier this could lead User to assume a
successful submission without any error

To fix this disable channel/TSG in case deferred_reset_pending is set and skip
calls to gk20a_channel_abort()/gk20a_fifo_abort_tsg()

Note that we finally abort the channel when channel is being closed

Bug 200363077

Change-Id: Ia48ca369701c14d1913d8f7b66ed466b7b840224
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1665632
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Winnie Hsu <whsu@nvidia.com>

2018-02-28 09:45:27 -08:00

..

gpu/nvgpu

gpu: nvgpu: skip channel abort for deferred reset

2018-02-28 09:45:27 -08:00