From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935438AbeB1WZH (ORCPT ); Wed, 28 Feb 2018 17:25:07 -0500 Received: from srv-hp10-72.netsons.net ([94.141.22.72]:41487 "EHLO srv-hp10-72.netsons.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935297AbeB1WZD (ORCPT ); Wed, 28 Feb 2018 17:25:03 -0500 From: Luca Ceresoli To: linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Luca Ceresoli , Laurent Pinchart , Pawel Osciak , Marek Szyprowski , Kyungmin Park , Mauro Carvalho Chehab Subject: [PATCH 3/3] media: vb2-core: vb2_ops: document non-interrupt-cantext calling Date: Wed, 28 Feb 2018 23:24:47 +0100 Message-Id: <1519856687-5568-3-git-send-email-luca@lucaceresoli.net> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1519856687-5568-1-git-send-email-luca@lucaceresoli.net> References: <1519856687-5568-1-git-send-email-luca@lucaceresoli.net> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - srv-hp10.netsons.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lucaceresoli.net X-Get-Message-Sender-Via: srv-hp10.netsons.net: authenticated_id: luca+lucaceresoli.net/only user confirmed/virtual account not confirmed X-Authenticated-Sender: srv-hp10.netsons.net: luca@lucaceresoli.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Driver writers can benefit in knowing if/when callbacks are called in interrupt context. But it is not completely obvious here, so document it. Signed-off-by: Luca Ceresoli Cc: Laurent Pinchart Cc: Pawel Osciak Cc: Marek Szyprowski Cc: Kyungmin Park Cc: Mauro Carvalho Chehab --- include/media/videobuf2-core.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index f20000887d3c..f6818f732f34 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -296,6 +296,9 @@ struct vb2_buffer { /** * struct vb2_ops - driver-specific callbacks. * + * These operations are not called from interrupt context except where + * mentioned specifically. + * * @queue_setup: called from VIDIOC_REQBUFS() and VIDIOC_CREATE_BUFS() * handlers before memory allocation. It can be called * twice: if the original number of requested buffers -- 2.7.4