Debarshi Dutta 51544b8a68 gpu: nvgpu: avoid double mapping of usermode mmap region ...

gk20a_pm_runtime_suspend can fail and invoke gk20a_pm_finalize_poweron
that can cause double mapping of the usermode mmap region via
io_remap_pfn_range(). Avoid this by using a boolean variable to track
whether the region is already mapped.

Bug 2707416

Change-Id: I4d8cbe427400a5b986348a19af145367cc08ffc6
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2229312
GVS: Gerrit_Virtual_Submit
Reviewed-by: Dinesh T <dt@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2020-12-15 14:10:29 -06:00

..

nvgpu

gpu: nvgpu: avoid double mapping of usermode mmap region

2020-12-15 14:10:29 -06:00

Makefile

nvgpu: use kernel overlay features

2017-10-29 11:00:55 -07:00