From patchwork Fri Sep 1 12:44:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 719654 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56816CA0FE1 for ; Fri, 1 Sep 2023 12:44:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349544AbjIAMoj (ORCPT ); Fri, 1 Sep 2023 08:44:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349527AbjIAMoh (ORCPT ); Fri, 1 Sep 2023 08:44:37 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F663E0; Fri, 1 Sep 2023 05:44:31 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:4d01:31d2:de6b:d217]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id 9F2DE66072B9; Fri, 1 Sep 2023 13:44:27 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1693572268; bh=gaDM0Ytn9pQussDWC2PqEbL+YnC+DHLH9QSJ8VT8PzU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GlUwywWSAS+2i0Z3R8RUcFhxKolUiSEeWAzI6a3MGa73yZQKW665OxnMyoyeNbocp LTDuuV/Hs6Az/0d3b5EnjVfx41aggoDQiQPLGAA8LOaLX+dWWiyBGT0FMZkp+91wWr saAGmOGDIDveQEEURqVEdq3Eb1V0b1v2VB6axBlFy1OAkTeYZyLpSlDdKg6ogHi2YO nsiDIJmv36vII8JOeZteEGEwMr8RZvGMm2T8L1ETyhy9zT/bGjULn1Scl6pgagkRHc Fc9iTpIUS8RwCPam4VjtWnNdZd/8v+CmD6xTjMyl+BdJEt5i9EPUB5F1bVTp/hYzaN VV9ZS5KjpM9hA== From: Benjamin Gaignard To: mchehab@kernel.org, tfiga@chromium.org, m.szyprowski@samsung.com, ming.qian@nxp.com, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, hverkuil-cisco@xs4all.nl, nicolas.dufresne@collabora.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v6 05/18] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array Date: Fri, 1 Sep 2023 14:44:01 +0200 Message-Id: <20230901124414.48497-6-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230901124414.48497-1-benjamin.gaignard@collabora.com> References: <20230901124414.48497-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Use vb2_get_buffer() instead of directly access to vb2_buffer buffer array. This could allow to change the type bufs[] field of vb2_buffer structure if needed. After each call to vb2_get_buffer() we need to be sure that we get a valid pointer so check the return value of all of them. Signed-off-by: Benjamin Gaignard --- drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c index 621038aab116..62910a1b8a98 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -603,7 +603,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) return -EINVAL; } - vb = vq->bufs[buf->index]; + vb = vb2_get_buffer(vq, buf->index); + if (!vb) { + dev_err(ctx->jpeg->dev, "buffer not found\n"); + return -EINVAL; + } jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb); jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;