Divya 0946df9865 gpu: nvgpu: add aelpg flag check in sysfs node ...

- When read from aelpg_param_read sysfs node and
  write to aelpg_param_store sysfs node is done it
  leads to system crash.
- This issue is seen on safety build as power features
  are not enabled.
- To avoid this crash, add aelpg platform flag check in
  aelpg_param_read and aelpg_param_store sysfs nodes.
- Also, as AELPG depends on ELPG add can_elpg check before
  enabling/disabling aelpg through sysfs node.

Bug 3582946

Change-Id: Iaf709db2b5dc0340390767f4b06a0ac06962ed77
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2690548
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit

2022-04-07 12:39:36 -07:00

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