Konsta Holtta c19c046446 gpu: nvgpu: protect missing sgt in gk20a_mem_phys ...

Return zero for missing sgt instead of attempting to dereference NULL.
Those NULL conditions should be almost nonexistent, and zero is not
normally used.

When reading gk20a_mem_phys() in gk20a_gr_get_chid_from_ctx() from an
isr, the mem desc may race with channel deletion and get suddendly
zeroed, even if the channel's in_use flag would be set. Plain zero
results in expected behaviour.

Change-Id: Id8ce37798d6fd3ceeb96a3f521c82569fccf30aa
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/729006
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2015-05-18 11:19:24 +05:30

drivers/gpu/nvgpu

gpu: nvgpu: protect missing sgt in gk20a_mem_phys

2015-05-18 11:19:24 +05:30

include

gpu: nvgpu: Implement compbits padding for mapping

2015-05-11 08:50:49 -07:00

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42 MiB