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| author | Nitin Kumbhar <nkumbhar@nvidia.com> | 2018-07-04 13:29:36 -0400 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2018-07-12 17:04:43 -0400 |
| commit | 97c6a10928cc463825479911c3a6518ade34ebc0 (patch) | |
| tree | e3a935b6dcf3099070bf30cc83718079458106ae /drivers/gpu/nvgpu/vgpu/gm20b | |
| parent | 0b7fbc1ff457580cf8ae3f7a8a55f5ab36bfd8e7 (diff) | |
gpu: nvgpu: add pm_rumtime fixes
Runtime PM is enabled only for iGPU and not for dGPU. For dGPU,
the .probe() of driver pm_runtime_disable()s, if rail-gating is
not enabled. With nvgpu kernel module load/unload, .probe() is
called multiple times for same struct device *. This results
in an overflow of disable_depth (3 bit refcount) and enables
runtime PM on 8th iteration and calls RTPM routines even if it's
disabled.
To effectively manage pm_runtime_disable(), move it from common
nvgpu_remove() to iGPU/dGPU specific routines.
Also, add restore pm_runtime state of device on driver .remove().
Bug 1987855
Change-Id: I781278da546ef9c9ef7d7da7dbea0757df32716f
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1770804
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/vgpu/gm20b')
0 files changed, 0 insertions, 0 deletions