drm/mediatek: fix mtk_hdmi_setup_vendor_specific_infoframe mistake

mtk_hdmi_setup_vendor_specific_infoframe will return before handle
mtk_hdmi_hw_send_info_frame.Because hdmi_vendor_infoframe_pack
returns the number of bytes packed into the binary buffer or
a negative error code on failure.
So correct it.

Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support")
Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 41a1c03b03476b620a511731518b8d0f7772417d..0a4ffd7241468dcbd064fa3a210f17094d10697b 100644 (file)
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1062,7 +1062,7 @@ static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
        }
 
        err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
-       if (err) {
+       if (err < 0) {
                dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
                        err);
                return err;