From mboxrd@z Thu Jan 1 00:00:00 1970 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 F22F5C433ED for ; Wed, 5 May 2021 12:24:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE960613C1 for ; Wed, 5 May 2021 12:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232428AbhEEMZC (ORCPT ); Wed, 5 May 2021 08:25:02 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:49822 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231129AbhEEMZA (ORCPT ); Wed, 5 May 2021 08:25:00 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id 57ED41F42E68 From: Andrzej Pietrasiewicz To: linux-media@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devel@driverdev.osuosl.org, Mauro Carvalho Chehab , Hans Verkuil , Ezequiel Garcia , Philipp Zabel , Maxime Ripard , Paul Kocialkowski , Chen-Yu Tsai , Jernej Skrabec , Greg Kroah-Hartman , Andrzej Pietrasiewicz , kernel@collabora.com Subject: [PATCHv2 0/3] Fix .buf_prepare Date: Wed, 5 May 2021 14:23:44 +0200 Message-Id: <20210505122347.7576-1-andrzej.p@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> References: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Drivers should only set the payload on .buf_prepare if the buffer is CAPTURE type. If an OUTPUT buffer has a zero bytesused set by userspace then v4l2-core will set it to buffer length. If we overwrite bytesused for OUTPUT buffers, too, then vb2_get_plane_payload() will return incorrect value which might be then written to hw registers by the driver. Andrzej Pietrasiewicz (2): media: hantro: Fix .buf_prepare media: cedrus: Fix .buf_prepare Ezequiel Garcia (1): media: rkvdec: Fix .buf_prepare drivers/staging/media/hantro/hantro_v4l2.c | 9 ++++++++- drivers/staging/media/rkvdec/rkvdec.c | 10 +++++++++- drivers/staging/media/sunxi/cedrus/cedrus_video.c | 8 +++++++- 3 files changed, 24 insertions(+), 3 deletions(-) base-commit: 0b276e470a4d43e1365d3eb53c608a3d208cabd4 -- 2.17.1 From mboxrd@z Thu Jan 1 00:00:00 1970 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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 E807BC43460 for ; Wed, 5 May 2021 12:24:09 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 732496139A for ; Wed, 5 May 2021 12:24:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 732496139A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=driverdev-devel-bounces@linuxdriverproject.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 1315B83CAF; Wed, 5 May 2021 12:24:09 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EhOrAicofVaB; Wed, 5 May 2021 12:24:08 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp1.osuosl.org (Postfix) with ESMTP id 1669683CB0; Wed, 5 May 2021 12:24:08 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by ash.osuosl.org (Postfix) with ESMTP id 1E8931BF852 for ; Wed, 5 May 2021 12:24:06 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 0AF9B83DF2 for ; Wed, 5 May 2021 12:24:06 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ziqfbxk6a3gA for ; Wed, 5 May 2021 12:24:05 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by smtp1.osuosl.org (Postfix) with ESMTPS id 6A53583CAF for ; Wed, 5 May 2021 12:24:05 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id 57ED41F42E68 From: Andrzej Pietrasiewicz To: linux-media@vger.kernel.org Subject: [PATCHv2 0/3] Fix .buf_prepare Date: Wed, 5 May 2021 14:23:44 +0200 Message-Id: <20210505122347.7576-1-andrzej.p@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> References: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Driver Project Developer List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Jernej Skrabec , kernel@collabora.com, Greg Kroah-Hartman , Maxime Ripard , Andrzej Pietrasiewicz , Paul Kocialkowski , linux-rockchip@lists.infradead.org, Chen-Yu Tsai , Philipp Zabel , Hans Verkuil , Mauro Carvalho Chehab , Ezequiel Garcia , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" Drivers should only set the payload on .buf_prepare if the buffer is CAPTURE type. If an OUTPUT buffer has a zero bytesused set by userspace then v4l2-core will set it to buffer length. If we overwrite bytesused for OUTPUT buffers, too, then vb2_get_plane_payload() will return incorrect value which might be then written to hw registers by the driver. Andrzej Pietrasiewicz (2): media: hantro: Fix .buf_prepare media: cedrus: Fix .buf_prepare Ezequiel Garcia (1): media: rkvdec: Fix .buf_prepare drivers/staging/media/hantro/hantro_v4l2.c | 9 ++++++++- drivers/staging/media/rkvdec/rkvdec.c | 10 +++++++++- drivers/staging/media/sunxi/cedrus/cedrus_video.c | 8 +++++++- 3 files changed, 24 insertions(+), 3 deletions(-) base-commit: 0b276e470a4d43e1365d3eb53c608a3d208cabd4 -- 2.17.1 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel From mboxrd@z Thu Jan 1 00:00:00 1970 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=-12.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 29CC2C433B4 for ; Wed, 5 May 2021 12:24:41 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D1C79613BA for ; Wed, 5 May 2021 12:24:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1C79613BA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:MIME-Version:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=X+QSiJ1f0n84AAZ9By6bdnkzi/oJElcNlbZMSBdTz+Y=; b=XvEZ2hsQ+tl/BuedWsc+C6AK7P TFGhUCBn7T2UxCbqGSKjs7p7UdhfaCotXLD5v77zcp0I5PQbXyWuVwe/cJtQZmG7DQ96J6ITGTkO1 jqeqJRjwxaZNGvPTh3Rsx7Khs5SclmE5qSMfA665XnhWGp2/tOOvUt0F4KTXP8XWS3AJJoiQ6mRKI ZzdgOACPhFa7nLXOOOMJ4EOkc1m+dOw7fvGfxDvFptibT4kxssMu9Tx9FZbIx1Wi5VQZ+SdwW3wjY DvuktwHr6ldAPHJYsfuFy54Zs5howMpeImG09xaO4YlXCTO+Y9EZpJjR5hSzxen7VUKKshLAme7Yw loOv+6eg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1leGZv-001B8c-5C; Wed, 05 May 2021 12:24:35 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1leGZT-001B4S-UO; Wed, 05 May 2021 12:24:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description; bh=8xuyGZLKd7Hb4kHiK3Zb1usYwV1F2aKrscMd/E8aIoE=; b=oChYzUxBTq0qjyvXio7l3+WYgV D5HCOd7/9vbURelQorLfJ2cnEEpv5P2yZMK5KMtuwirhe9Z/XU5hm18jiio/T4sa+3Pka1oSjGhzU BNx/nKzH0/aSre+Cm5QftrktANcNK1FrpNlELlPIYHpfzUuj+Av6KRYBHe0YyucQ5NDsjc5qq3W5i 6s2q6A+mPdqBzY6GQDcenCZMQusGITA3AiuUnneE6n3M00qBFxlVvQU2+CybyPcEKkefZQiahvklf gzVxMDD7NG6wJufqbm5/vlBEYxfy07h423PkCwXq0/pIcAGR+2Jrcv+Hnrezuf6bIXaTAnCvs8ovc ppup6YmA==; Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1leGZR-004jpQ-Fm; Wed, 05 May 2021 12:24:06 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id 57ED41F42E68 From: Andrzej Pietrasiewicz To: linux-media@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devel@driverdev.osuosl.org, Mauro Carvalho Chehab , Hans Verkuil , Ezequiel Garcia , Philipp Zabel , Maxime Ripard , Paul Kocialkowski , Chen-Yu Tsai , Jernej Skrabec , Greg Kroah-Hartman , Andrzej Pietrasiewicz , kernel@collabora.com Subject: [PATCHv2 0/3] Fix .buf_prepare Date: Wed, 5 May 2021 14:23:44 +0200 Message-Id: <20210505122347.7576-1-andrzej.p@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> References: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210505_052405_676686_CB1124E3 X-CRM114-Status: UNSURE ( 7.52 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Drivers should only set the payload on .buf_prepare if the buffer is CAPTURE type. If an OUTPUT buffer has a zero bytesused set by userspace then v4l2-core will set it to buffer length. If we overwrite bytesused for OUTPUT buffers, too, then vb2_get_plane_payload() will return incorrect value which might be then written to hw registers by the driver. Andrzej Pietrasiewicz (2): media: hantro: Fix .buf_prepare media: cedrus: Fix .buf_prepare Ezequiel Garcia (1): media: rkvdec: Fix .buf_prepare drivers/staging/media/hantro/hantro_v4l2.c | 9 ++++++++- drivers/staging/media/rkvdec/rkvdec.c | 10 +++++++++- drivers/staging/media/sunxi/cedrus/cedrus_video.c | 8 +++++++- 3 files changed, 24 insertions(+), 3 deletions(-) base-commit: 0b276e470a4d43e1365d3eb53c608a3d208cabd4 -- 2.17.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip From mboxrd@z Thu Jan 1 00:00:00 1970 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=-12.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 B55B9C43460 for ; Wed, 5 May 2021 12:25:53 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 67ACE613C1 for ; Wed, 5 May 2021 12:25:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67ACE613C1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:MIME-Version:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=DyF8l2nxwVCrydgiqGrSFWkJBuPqU9UIapPZR2LTYnI=; b=Wip+H3aSS1DeUPm16v0fTl2ln4 m3Ao7kAeWkbi1Dt7WYGW8NH7mUfXJGSe9GJQ/1xE9Jue6g1o7tZlgUJesaaSCDlawr1rdRQGiJADO eseHk6YLwRdTzc/FgTsm6qi0/WYyfosrLjzVrIo72LfwtagzCPCiYq3Xad2QB8k/G8oXvG44+jBq2 vTajyTSEaGxElmambBXgYPu2ZQbbXqMZCOMplGRF3A/ZImwxdu0dkjR+QAgAorjNqphGV8jYXQ3bJ yPWX+kAQdh0PgnwjFhyWcNdbCMBqteVFiwypb3Xl/HSKiCSthfIwRKfu52AOfi3gYe+RR24wPMv0z eGL7IZ8Q==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1leGZZ-001B5V-7w; Wed, 05 May 2021 12:24:14 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1leGZT-001B4S-UO; Wed, 05 May 2021 12:24:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description; bh=8xuyGZLKd7Hb4kHiK3Zb1usYwV1F2aKrscMd/E8aIoE=; b=oChYzUxBTq0qjyvXio7l3+WYgV D5HCOd7/9vbURelQorLfJ2cnEEpv5P2yZMK5KMtuwirhe9Z/XU5hm18jiio/T4sa+3Pka1oSjGhzU BNx/nKzH0/aSre+Cm5QftrktANcNK1FrpNlELlPIYHpfzUuj+Av6KRYBHe0YyucQ5NDsjc5qq3W5i 6s2q6A+mPdqBzY6GQDcenCZMQusGITA3AiuUnneE6n3M00qBFxlVvQU2+CybyPcEKkefZQiahvklf gzVxMDD7NG6wJufqbm5/vlBEYxfy07h423PkCwXq0/pIcAGR+2Jrcv+Hnrezuf6bIXaTAnCvs8ovc ppup6YmA==; Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1leGZR-004jpQ-Fm; Wed, 05 May 2021 12:24:06 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id 57ED41F42E68 From: Andrzej Pietrasiewicz To: linux-media@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devel@driverdev.osuosl.org, Mauro Carvalho Chehab , Hans Verkuil , Ezequiel Garcia , Philipp Zabel , Maxime Ripard , Paul Kocialkowski , Chen-Yu Tsai , Jernej Skrabec , Greg Kroah-Hartman , Andrzej Pietrasiewicz , kernel@collabora.com Subject: [PATCHv2 0/3] Fix .buf_prepare Date: Wed, 5 May 2021 14:23:44 +0200 Message-Id: <20210505122347.7576-1-andrzej.p@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> References: <58791717-b7a9-d057-a998-a4440fcbe783@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210505_052405_676686_CB1124E3 X-CRM114-Status: UNSURE ( 7.52 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Drivers should only set the payload on .buf_prepare if the buffer is CAPTURE type. If an OUTPUT buffer has a zero bytesused set by userspace then v4l2-core will set it to buffer length. If we overwrite bytesused for OUTPUT buffers, too, then vb2_get_plane_payload() will return incorrect value which might be then written to hw registers by the driver. Andrzej Pietrasiewicz (2): media: hantro: Fix .buf_prepare media: cedrus: Fix .buf_prepare Ezequiel Garcia (1): media: rkvdec: Fix .buf_prepare drivers/staging/media/hantro/hantro_v4l2.c | 9 ++++++++- drivers/staging/media/rkvdec/rkvdec.c | 10 +++++++++- drivers/staging/media/sunxi/cedrus/cedrus_video.c | 8 +++++++- 3 files changed, 24 insertions(+), 3 deletions(-) base-commit: 0b276e470a4d43e1365d3eb53c608a3d208cabd4 -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel