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drm/amd/display: Fill plane attrs only for valid pxl format

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[Why]
In fill_plane_buffer_attributes() we calculate chroma/luma
assuming that the surface_pixel_format is always valid.
If it's not the case, there's a risk of divide by zero error.

[How]
Check if format valid before calculating pixel format attributes

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2019-04-25 11:02:30 -04:00 committed by Alex Deucher
parent b2293ac237
commit 1894478ad1
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -2584,7 +2584,7 @@ fill_plane_buffer_attributes(struct amdgpu_device *adev,
address->type = PLN_ADDR_TYPE_GRAPHICS;
address->grph.addr.low_part = lower_32_bits(afb->address);
address->grph.addr.high_part = upper_32_bits(afb->address);
} else {
} else if (format < SURFACE_PIXEL_FORMAT_INVALID) {
uint64_t chroma_addr = afb->address + fb->offsets[1];
plane_size->video.luma_size.x = 0;