From patchwork Thu Nov 9 16:34:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 743268 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 03D0EC4167B for ; Thu, 9 Nov 2023 16:40:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344814AbjKIQkO (ORCPT ); Thu, 9 Nov 2023 11:40:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50040 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344801AbjKIQjb (ORCPT ); Thu, 9 Nov 2023 11:39:31 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38F4B46A8; Thu, 9 Nov 2023 08:38:30 -0800 (PST) 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 DD35366076B7; Thu, 9 Nov 2023 16:38:27 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1699547908; bh=lPwuFDyaawZGgIItBgoTtp763n9vIxRGrl//OpxBMaY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Yu2COCISg93puHtY+icdltIz/uQQUjO71Plwtwsf1pSI2+DmwBeCv4eifWM9j8mYa GkzK8UfQSOheEzG1fA8Zdc2tWPa14b83j2dKzX3Q0U6wi/WKYCIClXbzW4s6G6HTA8 jIcNqNOtkyrUTdG1turmJgtKqAV8B4iaL4w9arcHk1YifgGSstd7/zngObGqVTJbBu OkOpDZpXrW4XuNKLkhVYqDzkYUOnEttVC03bVEBCEyJJ1tJWE8IAUqAxUxuTpJh6T7 Gm9ZzOh2DsLhDGREWS9w4j7lYgkTYRKXIgyDw0yDcclK31Z31Sx1UaBlqoD4hYlHSe 7NAYeFgjNQ6KA== 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 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field Date: Thu, 9 Nov 2023 17:34:58 +0100 Message-Id: <20231109163512.179524-43-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 Precedence: bulk List-ID: X-Mailing-List: linux-media@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 future. Signed-off-by: Benjamin Gaignard Reviewed-by: Andrzej Pietrasiewicz --- 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;