Konsta Holtta 7072bdc513 gpu: nvgpu: check sync existence in channel update ...

The channel sync object can get deleted before all channel updates have
finished if the channel is freed before them, so work around a null
dereference by testing if the sync exists. Channel and/or c->sync
refcounting would be necessary for proper fix.

Bug 200076344

Change-Id: Ica8ef2df9cd95cfa593cd4f41768dbb6641357b2
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/734266
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2015-05-18 11:31:39 +05:30

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