We have some code duplication related to EDID duplication. Add a helper.
Signed-off-by: Jani Nikula jani.nikula@intel.com --- drivers/gpu/drm/drm_edid.c | 12 ++++++++++++ include/drm/drm_crtc.h | 1 + 2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index c24af1d..412b80f 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1264,6 +1264,18 @@ struct edid *drm_get_edid(struct drm_connector *connector, } EXPORT_SYMBOL(drm_get_edid);
+/** + * drm_edid_duplicate - duplicate an EDID and the extensions + * @edid: EDID to duplicate + * + * Return duplicate edid or NULL on allocation failure. + */ +struct edid *drm_edid_duplicate(const struct edid *edid) +{ + return kmemdup(edid, (edid->extensions + 1) * EDID_LENGTH, GFP_KERNEL); +} +EXPORT_SYMBOL(drm_edid_duplicate); + /*** EDID parsing ***/
/** diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index b2d08ca..8ab633a 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -980,6 +980,7 @@ extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_m extern bool drm_probe_ddc(struct i2c_adapter *adapter); extern struct edid *drm_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter); +extern struct edid *drm_edid_duplicate(const struct edid *edid); extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid); extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode); extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);