From patchwork Thu Nov 9 16:34:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 13451351 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D96C8C4332F for ; Thu, 9 Nov 2023 16:38:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=r1XXYLhXKDWxoBsiSE9zYk1cResT/EYuQ/jVjpN+yQs=; b=HuLir59JtzDArk SpNVDeWcGQf5Q/X8c/1D1EM5Rgpa8sS0KwM1hlAcZvp8Wt09LLDO+TobWPfNEaNuneKwbtR7BCbzs iTQv/HUPODivUOGxNMh6qnM6rtxHRAK0wKg0ioB1B/1+o8APQNYjCf/xRWLTzrboP4vXC5WALO8XE scaiMvbCv/v10RXhjzs/nF6Ih62P+HNhmHVh16FhBvrqo+BHVhe9Pq0m2W0CIx5xUtySu2VolNrBJ XVvLqKCdad2esKLg9FrXz4rrW/MLtioDzaSvPPXsxSj1MAhohOIniGok9PtesQe/Bte02b4jV+xgh S4BUQlmVkOPf8jYQHPOA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r182V-006lDa-1f; Thu, 09 Nov 2023 16:37:55 +0000 Received: from madras.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e5ab]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r182N-006l3X-2Z; Thu, 09 Nov 2023 16:37:49 +0000 Received: from benjamin-XPS-13-9310.. (cola.collaboradmins.com [195.201.22.229]) (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 9775A66076A5; Thu, 9 Nov 2023 16:37:45 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1699547866; bh=KuGYMXGgeorOvF4/Aiwj3OYSrc4WmXD1A3tlAdH9F3E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VxCsnAu5DiMOxnka7oWekfguQPXa6HLtGB1j+cH+TmJddYB9NRecHBr4Pn/6gM3bQ t6Eslvpz8IMXoGeVbzoui1igpnFUiNuE74EwmiWXWUwxsjGWM5QDcEk01JiO5Sa8cr 2owyo9Nopcxv8UllX9ljmRvfWEwhiZODFfx9bUZEdmtZB4HA7yNLtZzuuzp4gFLu3b RWI37125DbpzBOUYUV6AQVE2kjg/z1nVkqv0t5F0wemftKxa8fmuKAO7AsLK6Q7ZsO RINphQwGA/DHzvY5I9L/3fbFXDxXYQO7JwhYYlpQjgJfxQ/Yh4mIoEF9o7P7ClascO 5Dr+nz+MjhMnw== 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 , Andrzej Pietrasiewicz Subject: [PATCH v15 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array Date: Thu, 9 Nov 2023 17:34:34 +0100 Message-Id: <20231109163512.179524-19-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231109163512.179524-14-benjamin.gaignard@collabora.com> References: <20231109163512.179524-14-benjamin.gaignard@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231109_083747_981080_5D8A8FE1 X-CRM114-Status: GOOD ( 11.99 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 Reviewed-by: Andrzej Pietrasiewicz --- drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c index b322ef179f05..3a966fdf814c 100644 --- a/drivers/media/dvb-core/dvb_vb2.c +++ b/drivers/media/dvb-core/dvb_vb2.c @@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req) int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b) { struct vb2_queue *q = &ctx->vb_q; + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index); - if (b->index >= q->num_buffers) { - dprintk(1, "[%s] buffer index out of range\n", ctx->name); + if (!vb2) { + dprintk(1, "[%s] invalid buffer index\n", ctx->name); return -EINVAL; } - vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b); + vb2_core_querybuf(&ctx->vb_q, vb2, b); dprintk(3, "[%s] index=%d\n", ctx->name, b->index); return 0; } @@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp) int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b) { struct vb2_queue *q = &ctx->vb_q; + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index); int ret; - if (b->index >= q->num_buffers) { - dprintk(1, "[%s] buffer index out of range\n", ctx->name); + if (!vb2) { + dprintk(1, "[%s] invalid buffer index\n", ctx->name); return -EINVAL; } - ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL); + ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL); if (ret) { dprintk(1, "[%s] index=%d errno=%d\n", ctx->name, b->index, ret);