From patchwork Tue Oct 31 16:30:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 13441896 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 1CF5BC4332F for ; Tue, 31 Oct 2023 16:37:52 +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=ONUVnHLiuIhTNFQrIOfy6Q47XhWBMvQ8kTkNxsBKs3s=; b=NiyxActksJNsEA YL/r60jHAfqWwhB314ViQs2LJXu0Ss6XKpBd4dcNseHdbJvUEpcviQTqTpZOVP9afDA9ZeBGatypy 3Ns/TtSlsXha3vFT5tquMzVhIC3JfyMSgeiwIZWoQ9DPexkJd7BV4e0UhmZydjL0uY3orZSQhzE0M 0QZlvAPrPDpCDqS7TJIGb8QvZDMDArsaFGtZHlfxyShrnjmQPrvbZ1XHQE0t4KOKDdk1bKcv8fkh7 G4FaJ+f5tKTp7APanxBJ8OC8BRnEsz5Bws2YLS3AoTlayl81sNhMItU6NbO9ZW7ZExHUoZanX2BFW 1zUUHkObDtFWu5wMDvDg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qxrk8-005ffh-0g; Tue, 31 Oct 2023 16:37:28 +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 1qxrf8-005caQ-1p; Tue, 31 Oct 2023 16:32:20 +0000 Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:c562:2ef4:80c0:92f]) (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 F311666073B6; Tue, 31 Oct 2023 16:32:16 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1698769937; bh=Cxne9UW1Rdv3DqE7yxtW6lkbxfpON9tV+mkocfttCkg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ibBGN8Bae+pP6U4s2NEEt1GhmGXLPJHYZds8+XgsYyuh+B+/RNXZpHcKH35eWZ+mW 9FPGubhRKV5J7DawvFR16fVUG2k5ZIGhRwg4liZIrpcDDb7cEJFpt6qF+m3kcrFsoB jsUbmu1HtPwZONE/xdGQKTzaJLs5M1/E3+VgdTfrbT+7Cy0emGwEJ499C8N5btXj7q nyd3ruy3L9NjkE4tKB7yqXCJbwnMKrjqeoHnfsDCvSIyDervf/Hts5r8sJ1g5IZGJ6 yM9fqCihqm4Mw7k+V4VEy7RZdI71Ze8z1QcY4ingdkl7+Rp6JTtAWYa4Jp36xiZjwE TlvPtSrMa4qfw== 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 v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field Date: Tue, 31 Oct 2023 17:30:42 +0100 Message-Id: <20231031163104.112469-35-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231031163104.112469-1-benjamin.gaignard@collabora.com> References: <20231031163104.112469-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231031_093218_741417_2E04FF62 X-CRM114-Status: GOOD ( 11.69 ) 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_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 --- samples/v4l/v4l2-pci-skeleton.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c index a61f94db18d9..a65aa9d1e9da 100644 --- a/samples/v4l/v4l2-pci-skeleton.c +++ b/samples/v4l/v4l2-pci-skeleton.c @@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq, unsigned int sizes[], struct device *alloc_devs[]) { struct skeleton *skel = vb2_get_drv_priv(vq); + unsigned int q_num_bufs = vb2_get_num_buffers(vq); skel->field = skel->format.field; if (skel->field == V4L2_FIELD_ALTERNATE) { @@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq, skel->field = V4L2_FIELD_TOP; } - if (vq->num_buffers + *nbuffers < 3) - *nbuffers = 3 - vq->num_buffers; + if (q_num_bufs + *nbuffers < 3) + *nbuffers = 3 - q_num_bufs; if (*nplanes) return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;