diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/kvmgt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 38830818c120..ca0fb126b02d 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -425,6 +425,18 @@ static const struct intel_vgpu_regops intel_vgpu_regops_opregion = { .release = intel_vgpu_reg_release_opregion, }; +static bool edid_valid(const void *edid, size_t size) +{ + const struct drm_edid *drm_edid; + bool is_valid; + + drm_edid = drm_edid_alloc(edid, size); + is_valid = drm_edid_valid(drm_edid); + drm_edid_free(drm_edid); + + return is_valid; +} + static int handle_edid_regs(struct intel_vgpu *vgpu, struct vfio_edid_region *region, char *buf, size_t count, u16 offset, bool is_write) @@ -443,11 +455,7 @@ static int handle_edid_regs(struct intel_vgpu *vgpu, switch (offset) { case offsetof(struct vfio_region_gfx_edid, link_state): if (data == VFIO_DEVICE_GFX_LINK_STATE_UP) { - if (!drm_edid_block_valid( - (u8 *)region->edid_blob, - 0, - true, - NULL)) { + if (!edid_valid(region->edid_blob, EDID_SIZE)) { gvt_vgpu_err("invalid EDID blob\n"); return -EINVAL; } |