Deepak Nibade 2219f38727 gpu: nvgpu: take power refcount in ISR ...

We sometimes see race conditions where power refcount
is zero during ISR or bottom half.
If bottom half calls gk20a_busy(), it will lead to
boot up of GPU, but it is also possible that we are
already trying to poweroff GPU since power refcount
is zero

Fix this by taking a power refcount with gk20a_busy_noresume()
in ISR and then dropping this refcount at the end of
bottom half
Add new API gk20a_idle_nosuspend() to drop a refcount
without initiating suspend

Bug 200198908
Bug 1770522

Change-Id: Iec3d4dc8d468f49b71919d2bbc327da48b97bcab
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1160035
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2016-06-08 11:22:59 -07:00

drivers/gpu/nvgpu

gpu: nvgpu: take power refcount in ISR

2016-06-08 11:22:59 -07:00

include

gpu: nvgpu: vgpu: add support for max_freq

2016-06-06 15:35:16 -07:00

scripts

checkpatch: add checkpatch.pl

2016-04-19 09:23:35 -07:00

.gitignore

.gitignore: Add to kernel-nvgpu

2016-05-10 14:37:53 -07:00

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42 MiB