Lookup_modifier is returning INTEL_PLANE_CAP_TILING_4 on invalid fb_modifier value. Use lookup_modifier_or_null in intel_fb_modifier_to_tiling and return I915_TILING_NONE in case lookup_modifier_or_null returns null. Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_fb.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c index a235ec0f192d..f63f56b24b11 100644 --- a/drivers/gpu/drm/i915/display/intel_fb.c +++ b/drivers/gpu/drm/i915/display/intel_fb.c @@ -303,7 +303,14 @@ lookup_format_info(const struct drm_format_info formats[], unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier) { - u8 tiling_caps = lookup_modifier(fb_modifier)->plane_caps & + const struct intel_modifier_desc *md; + u8 tiling_caps; + + md = lookup_modifier_or_null(fb_modifier); + if (!md) + return I915_TILING_NONE; + + tiling_caps = lookup_modifier_or_null(fb_modifier)->plane_caps & INTEL_PLANE_CAP_TILING_MASK; switch (tiling_caps) { -- 2.34.1