From 4e99f0e94871abbe926a1c1a137abdaf20264d50 Mon Sep 17 00:00:00 2001 From: Roman Li Date: Thu, 25 Apr 2019 11:02:30 -0400 Subject: [PATCH 1901/2940] 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 Change-Id: I6bbc31b03ef35a3b8f8469ab2a633895f2590cef Signed-off-by: Roman Li Reviewed-by: David Francis Acked-by: Bhawanpreet Lakha --- 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 b1197f55a35d..834adb729c6d 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2672,7 +2672,7 @@ 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; -- 2.17.1