From: Roman Li Roman.Li@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.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 Signed-off-by: Sasha Levin sashal@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;