Commit b244ffa15c8b ("drm/i915/gvt: Fix drm_format_mod value for vGPU plane") introduced a regression issue to the tiled memory decoding on BDW.
This patch can fix this issue.
Here is the issue detail: https://github.com/intel/gvt-linux/issues/61
v1->v2: - Refine the commit message. (Zhenyu)
Fixes: b244ffa15c8b("drm/i915/gvt: Fix drm_format_mod value for vGPU plane") Signed-off-by: Tina Zhang tina.zhang@intel.com Cc: stable@vger.kernel.org # v4.19+ Cc: Zhenyu Wang zhenyuw@linux.intel.com --- drivers/gpu/drm/i915/gvt/fb_decoder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gvt/fb_decoder.c b/drivers/gpu/drm/i915/gvt/fb_decoder.c index 481896f..85e6736 100644 --- a/drivers/gpu/drm/i915/gvt/fb_decoder.c +++ b/drivers/gpu/drm/i915/gvt/fb_decoder.c @@ -235,7 +235,7 @@ int intel_vgpu_decode_primary_plane(struct intel_vgpu *vgpu, plane->bpp = skl_pixel_formats[fmt].bpp; plane->drm_format = skl_pixel_formats[fmt].drm_format; } else { - plane->tiled = !!(val & DISPPLANE_TILED); + plane->tiled = val & DISPPLANE_TILED; fmt = bdw_format_to_drm(val & DISPPLANE_PIXFORMAT_MASK); plane->bpp = bdw_pixel_formats[fmt].bpp; plane->drm_format = bdw_pixel_formats[fmt].drm_format;