Commit 1894478a authored Apr 25, 2019 by Roman Li Committed by Alex Deucher May 24, 2019

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



[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>

parent b2293ac2

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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