media: mediatek: vcodec: Fix v4l2 compliance decoder cmd test fail

Will return -EINVAL using standard framework api when test stateless
decoder with cmd VIDIOC_(TRY)DECODER_CMD. Disable them to adjust v4l2
compliance test for user driver(GStreamer/Chrome) won't use decoder cmd.

Fixes: 8cdc3794b2e3 ("media: mtk-vcodec: vdec: support stateless API")
Signed-off-by: Yunfei Dong <[e-mail]>
Reviewed-by: AngeloGioacchino Del Regno <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c

···
 static int vidioc_try_decoder_cmd(struct file *file, void *priv,
 				struct v4l2_decoder_cmd *cmd)
 {
-	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
-
-	/* Use M2M stateless helper if relevant */
-	if (ctx->dev->vdec_pdata->uses_stateless_api)
-		return v4l2_m2m_ioctl_stateless_try_decoder_cmd(file, priv,
-								cmd);
-	else
-		return v4l2_m2m_ioctl_try_decoder_cmd(file, priv, cmd);
+	return v4l2_m2m_ioctl_try_decoder_cmd(file, priv, cmd);
 }
 
 
···
 	ret = vidioc_try_decoder_cmd(file, priv, cmd);
 	if (ret)
 		return ret;
-
-	/* Use M2M stateless helper if relevant */
-	if (ctx->dev->vdec_pdata->uses_stateless_api)
-		return v4l2_m2m_ioctl_stateless_decoder_cmd(file, priv, cmd);
 
 	mtk_v4l2_debug(1, "decoder cmd=%u", cmd->cmd);
 	dst_vq = v4l2_m2m_get_vq(ctx->m2m_ctx,

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c

···
 	}
 
 	if (dev->vdec_pdata->uses_stateless_api) {
+		v4l2_disable_ioctl(vfd_dec, VIDIOC_DECODER_CMD);
+		v4l2_disable_ioctl(vfd_dec, VIDIOC_TRY_DECODER_CMD);
+
 		dev->mdev_dec.dev = &pdev->dev;
 		strscpy(dev->mdev_dec.model, MTK_VCODEC_DEC_NAME,
 			sizeof(dev->mdev_dec.model));