Deepak Nibade 2bc8f4e36d gpu: nvgpu: fix event id polling ...

In gk20a_event_id_poll(), we always set the mask value
and return it. This causes poll() from UMD to be always
successful irrespective of event is really generated or not

Fix this by adding a flag event_posted for each event
Set this flag while posting the event
In gk20a_event_id_poll(), set the mask value only if
this flag is set. If flag is set, set mask and clear the flag

Bug 200089620

Change-Id: If14236547c611fe4bfa1410ff5b69c9fa02d43bb
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1160253
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2016-06-10 08:14:49 -07:00

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