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: 13451542 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 72CD3C4332F for ; Thu, 9 Nov 2023 16:40:32 +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=7nJphk7jkFZpRJ3uUTb4XaH1QY01f9+ZYRgmYd9t3qE=; b=ysroVOh5EG1H8v +pW5Kjj63MeKXD0sw668SMWfLuAPvtI7V/VAhooGAXeqUWyDM3EbK9Sosb4nRL+ae8OuQ4JeCJIvT arcnns+zKXOvrnrzbTh3iJh9mcxEviaX+AgLZGtwtLWl6SlN08/gW2BcEs6kSk16VkAEQjw1W0df1 Q52dmx1DzFS8P/yeZr53eZveIdxb0xiwufD3jeO8QYxEzSdbrIcW55IP9NKAQCqTnYH2Wl2EP1iEf vuXjs+DThza0krsQLAPPBvXe5aedwmD7LOn3andZ/e7oUd/clGQI3JUVM3lM0AuMA7hb+uXh8fGEm nAoehJm8uBN3SfBO5UEw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r184a-006na3-0k; Thu, 09 Nov 2023 16:40:04 +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 1r1834-006lsa-0W; Thu, 09 Nov 2023 16:38:32 +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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231109_083830_338714_3CCB6CA6 X-CRM114-Status: GOOD ( 11.54 ) 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 --- 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;