From mboxrd@z Thu Jan 1 00:00:00 1970 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 E91CACDB47E for ; Wed, 18 Oct 2023 10:32:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230468AbjJRKcW (ORCPT ); Wed, 18 Oct 2023 06:32:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229563AbjJRKcT (ORCPT ); Wed, 18 Oct 2023 06:32:19 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15756BA; Wed, 18 Oct 2023 03:32:18 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA133C433C7; Wed, 18 Oct 2023 10:32:14 +0000 (UTC) Message-ID: Date: Wed, 18 Oct 2023 12:32:14 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 39/56] media: usb: Stop direct calls to queue num_buffers field Content-Language: en-US, nl To: Benjamin Gaignard , 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, 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 References: <20231017144756.34719-1-benjamin.gaignard@collabora.com> <20231017144756.34719-40-benjamin.gaignard@collabora.com> From: Hans Verkuil In-Reply-To: <20231017144756.34719-40-benjamin.gaignard@collabora.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Subject line doesn't mention 'airspy:' Regards, Hans On 17/10/2023 16:47, Benjamin Gaignard wrote: > 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/airspy/airspy.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c > index 462eb8423506..e24e655fb1db 100644 > --- a/drivers/media/usb/airspy/airspy.c > +++ b/drivers/media/usb/airspy/airspy.c > @@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq, > unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) > { > struct airspy *s = vb2_get_drv_priv(vq); > + unsigned int q_num_bufs = vb2_get_num_buffers(vq); > > dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers); > > /* Need at least 8 buffers */ > - if (vq->num_buffers + *nbuffers < 8) > - *nbuffers = 8 - vq->num_buffers; > + if (q_num_bufs + *nbuffers < 8) > + *nbuffers = 8 - q_num_bufs; > *nplanes = 1; > sizes[0] = PAGE_ALIGN(s->buffersize); >