Deepak Nibade f1be222687 gpu: nvgpu: fix invalid TSG pointer ...

In gr_gp10b_set_cilp_preempt_pending() we already extract TSG pointer
by calling tsg_gk20a_from_ch() which safely returns correct TSG or
NULL in error case

But before calling g->ops.fifo.post_event_id() we again extract TSG
by directly accessing g->fifo.tsg array, and this could result in
getting invalid TSG pointer

Fix this by removing direct TSG extraction through g->fifo.tsg

Bug 2444819
Jira NVGPU-1601

Change-Id: I9d49b5309c74e162828e7cb7d97556aae939a07c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1984954
(cherry picked from commit dcd3778b5e)
Reviewed-on: https://git-master.nvidia.com/r/2077313
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2019-04-01 09:12:33 -07:00

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