From patchwork Thu Oct 19 12:51:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 736042 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 0FA55CDB491 for ; Thu, 19 Oct 2023 12:52:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345856AbjJSMwu (ORCPT ); Thu, 19 Oct 2023 08:52:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345754AbjJSMwj (ORCPT ); Thu, 19 Oct 2023 08:52:39 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8EF512D; Thu, 19 Oct 2023 05:52:37 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:ccea:1fb5:34eb:239b]) (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 33CCD6607347; Thu, 19 Oct 2023 13:52:36 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1697719956; bh=U25RUhgn4wrEJgYWeqq/JM19FcBBlklJam1nCiVEFHQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AYpmPP36T5mPlYAQ7Ljy1EP2tvHb4iQb5fs2G7SGU61EmhAkf7s7SPmgA/jwHxORZ 77IBBOP8nPtKSQr4wPDLxe2O1oVoVdTAfzGTB2gunIGV/Lqm1+PcxifxMQuMBnf2Le cS2eGpXcsaEAKiM9/3Cdwl0Ur8FLSQPonBhM7tGNNvbPR0KvQFBrYOVwQatbNEpNyb xvdPCYMjh4kzc4TEy/SFtvRzmh9xYUTsitvPkf1heJxMZlV+C1O9I5oxUoY7g5k0Oy UbB8Ff82YtWx1jsbO4pEcfmox9FBANJZ4lAs9MqDSoxy1M6dZ1KrG5fLMrGCus0Ehs S3FOa+K7h674A== 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 , Bin Liu , Matthias Brugger Subject: [PATCH v13 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array Date: Thu, 19 Oct 2023 14:51:37 +0200 Message-Id: <20231019125222.21370-12-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231019125222.21370-1-benjamin.gaignard@collabora.com> References: <20231019125222.21370-1-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 direct access to the vb2_queue bufs array. This allows us to change the type of the bufs in the future. 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 CC: Bin Liu CC: Matthias Brugger --- drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c index 7194f88edc0f..73a063b1569b 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) goto end; vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type); - if (buf->index >= vq->num_buffers) { - dev_err(ctx->jpeg->dev, "buffer index out of range\n"); + vb = vb2_get_buffer(vq, buf->index); + if (!vb) { + dev_err(ctx->jpeg->dev, "buffer not found\n"); return -EINVAL; } - - vb = vq->bufs[buf->index]; jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb); jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;