From: Roman Li <roman...@amd.com> [ Upstream commit 1894478ad1f8fd7366edc5cee49ee9caea0e3d52 ]
[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...@amd.com> Reviewed-by: David Francis <david.fran...@amd.com> Acked-by: Bhawanpreet Lakha <bhawanpreet.la...@amd.com> Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> Signed-off-by: Sasha Levin <sas...@kernel.org> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index fa268dd736f4..31530bfd002a 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2592,7 +2592,7 @@ 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; -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx