From patchwork Tue Oct 17 14:47:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 734466 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 E3817CDB48D for ; Tue, 17 Oct 2023 14:49:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344349AbjJQOtR (ORCPT ); Tue, 17 Oct 2023 10:49:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344267AbjJQOsf (ORCPT ); Tue, 17 Oct 2023 10:48:35 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF4B4113; Tue, 17 Oct 2023 07:48:27 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:7205:da49:a7e8:59f8]) (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 73F8B66073A6; Tue, 17 Oct 2023 15:48:25 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1697554105; bh=R5HfsLcfPw3e1xcp8H3MPpbUdOMLjhRWrPhiuKICT0k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nI9BoGaAJlHIdmWnVuOucMI0jMXM6fn5Vu6yoGz9KOlJfleQ6/xBuztSrO1C/2k+Q yNw7xlQt/7bijzfzCLXvu+GiEzxQZ87Caf3GThCTikIE8wo6jfMMi8ns5/UpUTygS1 Rjo5rP/w6h1EkoR1nLQY5D5l/Jf45gUgaK+s8dlrU7Sl1G1KEyu1yS5pF0RjNr1djH G6rbleHyw1606urpdZG23neHaDhAkBJyC02hH6nlaWa9uIqxLzarRwbd32xZojgDUv Wm2KvZ1hKXOW9vPVWjW7apOtCKyV3350kbA4e5mxO4L+2ZfdclPL4NofLNJgAilUIU iHHzteoT/r20w== 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 v12 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field Date: Tue, 17 Oct 2023 16:47:42 +0200 Message-Id: <20231017144756.34719-43-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231017144756.34719-1-benjamin.gaignard@collabora.com> References: <20231017144756.34719-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Use vb2_get_num_buffers() to avoid using queue num_buffers field directly. This allows us to change how the number of buffers is computed in the futur. Signed-off-by: Benjamin Gaignard --- drivers/media/usb/usbtv/usbtv-video.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index 1e30e05953dc..62a583040cd4 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq, { struct usbtv *usbtv = vb2_get_drv_priv(vq); unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32); + unsigned int q_num_bufs = vb2_get_num_buffers(vq); - if (vq->num_buffers + *nbuffers < 2) - *nbuffers = 2 - vq->num_buffers; + if (q_num_bufs + *nbuffers < 2) + *nbuffers = 2 - q_num_bufs; if (*nplanes) return sizes[0] < size ? -EINVAL : 0; *nplanes = 1;