From: Ville Syrjälä ville.syrjala@linux.intel.com
The framebuffer offset must be aligned to (macro)pixel size.
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com --- drivers/gpu/drm/i915/intel_display.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8fea475..9df15ee 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6660,6 +6660,7 @@ int intel_framebuffer_init(struct drm_device *dev, struct drm_i915_gem_object *obj) { int ret; + unsigned int align = drm_format_plane_cpp(mode_cmd->pixel_format, 0);
if (obj->tiling_mode == I915_TILING_Y) return -EINVAL; @@ -6699,6 +6700,7 @@ int intel_framebuffer_init(struct drm_device *dev, case DRM_FORMAT_UYVY: case DRM_FORMAT_YVYU: case DRM_FORMAT_VYUY: + align <<= 1; if (INTEL_INFO(dev)->gen < 6) return -EINVAL; break; @@ -6707,6 +6709,9 @@ int intel_framebuffer_init(struct drm_device *dev, return -EINVAL; }
+ if (mode_cmd->offsets[0] % align) + return -EINVAL; + ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs); if (ret) { DRM_ERROR("framebuffer init failed %d\n", ret);