From patchwork Thu Jan 14 18:01:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Helen Mae Koike Fornazier X-Patchwork-Id: 12020533 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45FE6C433DB for ; Thu, 14 Jan 2021 18:06:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 11EF823741 for ; Thu, 14 Jan 2021 18:06:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729463AbhANSFy (ORCPT ); Thu, 14 Jan 2021 13:05:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729450AbhANSFv (ORCPT ); Thu, 14 Jan 2021 13:05:51 -0500 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABAEFC061795; Thu, 14 Jan 2021 10:05:09 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: koike) with ESMTPSA id AE9681F45C6D From: Helen Koike To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, mchehab@kernel.org, hans.verkuil@cisco.com, kernel@collabora.com, linux-kernel@vger.kernel.org, tfiga@chromium.org Subject: [PATCH 2/3] media: videodev2.h: clarify v4l2_pix_format_mplane.sizeimage docs when to set to zero Date: Thu, 14 Jan 2021 15:01:48 -0300 Message-Id: <20210114180149.1755892-3-helen.koike@collabora.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210114180149.1755892-1-helen.koike@collabora.com> References: <20210114180149.1755892-1-helen.koike@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org sizeimage field should be set to zero for unused planes, even when v4l2_pix_format_mplane.num_planes is smaller then the index of planes. Signed-off-by: Helen Koike --- I caught this with v4l2-compliance, which throws an error if we dirty planes, even if invalid, so I would like to make it clear in the docs. --- include/uapi/linux/videodev2.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 79dbde3bcf8d..d9b7c9177605 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2227,6 +2227,7 @@ struct v4l2_mpeg_vbi_fmt_ivtv { * struct v4l2_plane_pix_format - additional, per-plane format definition * @sizeimage: maximum size in bytes required for data, for which * this plane will be used + * Drivers should be set it zero for unused planes. * @bytesperline: distance in bytes between the leftmost pixels in two * adjacent lines */