drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal

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GFP_KERNEL may and will sleep, and this is being executed in
a non-preemptible context; this will mess things up since it's
called inbetween DC_FP_START/END, and rescheduling will result
in the DC_FP_END later being called in a different context (or
just crashing if any floating point/vector registers/instructions
are used after the call is resumed in a different context).

Signed-off-by: Daniel Kolesa <daniel@octaforge.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

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Daniel Kolesa 2020-08-08 22:42:35 +02:00 • committed by Alex Deucher

parent 79940e4d10

commit f41ed88cbd

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

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