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authorDeepak Nibade <dnibade@nvidia.com>2017-03-14 04:43:35 -0400
committermobile promotions <svcmobile_promotions@nvidia.com>2017-03-23 10:13:55 -0400
commit7505a759542c2d95e5abb42d44b8fb6afda74a87 (patch)
tree4276ff74ca3cc8dbc39de4b9f35e0eca88992c92 /drivers/gpu/nvgpu/vgpu/gk20a
parent978d13efe5719b28ea90b95d21bf25066df75ca8 (diff)
gpu: nvgpu: take power refcount in gk20a_cde_convert()
We have a gk20a_busy() call in gk20a_buffer_convert_gpu_to_cde() and we again call gk20a_busy() in gk20a_submit_channel_gpfifo() If gk20a_do_idle() is triggered in between these two calls, then this leads to a deadlock and results in idle failure Hence to avoid this take power refcount in a more fine-grained way i.e. in gk20a_cde_convert() instead of taking in gk20a_buffer_convert_gpu_to_cde() Keep gk20a_cde_execute_buffer() out of the gk20a_busy()/ gk20a_idle() pair since we take power refcount in submit path anyways Add correct error handling path in gk20a_cde_convert() Bug 200287073 Change-Id: Iffea2d4c03f42b47dbf05e7fe8fe2994f9c6b37c Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1324329 (cherry picked from commit ce057d784d40a6ce57e892d58e211ed2fd9826f8) Reviewed-on: http://git-master/r/1320408 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/vgpu/gk20a')
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