From patchwork Fri Oct 30 16:55:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11870311 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CB85814B4 for ; Fri, 30 Oct 2020 16:55:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A6D042075E for ; Fri, 30 Oct 2020 16:55:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604076944; bh=fbJgu8N7+CMSMQRM8erno00wsX4J3XXENIBb3YPbau0=; h=From:To:Cc:Subject:Date:List-ID:From; b=qQdwp3IqyML70bgsZnXJ4riRmgtnpjp1byNYZY/24qLpBCPhIoGNIIXPOns9IqcaC UNBW2zs2X9WzOCGXRz792BzW2l2P7B0mh++rvdW0tCJYSu+wqXNjBZMj6O6eBY1Tqt UefvBRpJ3CSbl7iTafIG5l/kPzzfGDdGPPXQO2yk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727057AbgJ3Qzk (ORCPT ); Fri, 30 Oct 2020 12:55:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:60664 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726902AbgJ3Qzk (ORCPT ); Fri, 30 Oct 2020 12:55:40 -0400 Received: from localhost.localdomain (HSI-KBW-46-223-126-90.hsi.kabel-badenwuerttemberg.de [46.223.126.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EAED22075E; Fri, 30 Oct 2020 16:55:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604076939; bh=fbJgu8N7+CMSMQRM8erno00wsX4J3XXENIBb3YPbau0=; h=From:To:Cc:Subject:Date:From; b=OqsxjyUI4MwsxQaC/VueYp64UA6qK4/iak5n48lhLhiUwFMRdxIIdlxRsrZmVyI45 LrEn4tkYYvU4bx0FCDLIpx5dCrGTVG/hnBWB/StkiARo9z1NctpsRb2ddBoif92UhP 9ooGWGIEYkgPbrfMTfgoZelouTiVpYhYb1qWv06Y= From: Arnd Bergmann To: Hans Verkuil Cc: Arnd Bergmann , linux-media@vger.kernel.org, mchehab@kernel.org, hch@lst.de, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/8] media: v4l2: simplify compat ioctl handling Date: Fri, 30 Oct 2020 17:55:21 +0100 Message-Id: <20201030165529.1255175-1-arnd@kernel.org> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Arnd Bergmann I have a series to remove all uses of compat_alloc_user_space() and copy_in_user() from the kernel, this is the part of it that involves the v4l2 compat code. The resulting code is significantly shorter and arguably more readable, but I have not done any testing beyond compilation on it, so at the minimum this first needs to pass the test suite for both native and compat users space. The first version had a number of bugs that Hans Verkuil managed to fix, I have now rebased my series on top of linux-5.10-rc1 and included his bugfixes. This series and the remaining changes for removing compat_alloc_user_space are available for further testing in https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git compat-alloc-user-space-4 Arnd Arnd Bergmann (8): media: v4l2: prepare compat-ioctl rework media: v4l2: remove unneeded compat ioctl handlers media: v4l2: move v4l2_ext_controls conversion media: v4l2: move compat handling for v4l2_buffer media: v4l2: allocate v4l2_clip objects early media: v4l2: convert v4l2_format compat ioctls media: v4l2: remaining compat handlers media: v4l2: remove remaining compat_ioctl drivers/media/common/saa7146/saa7146_video.c | 6 +- drivers/media/pci/bt8xx/bttv-driver.c | 8 +- drivers/media/pci/saa7134/saa7134-video.c | 19 +- .../media/test-drivers/vivid/vivid-vid-cap.c | 18 +- .../media/test-drivers/vivid/vivid-vid-out.c | 18 +- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 1773 ++++++----------- drivers/media/v4l2-core/v4l2-ioctl.c | 182 +- include/media/v4l2-ioctl.h | 11 + include/uapi/linux/videodev2.h | 2 +- 9 files changed, 760 insertions(+), 1277 deletions(-) Cc: linux-media@vger.kernel.org Cc: mchehab@kernel.org Cc: hverkuil@xs4all.nl Cc: hch@lst.de Cc: linux-kernel@vger.kernel.org