From patchwork Wed May 27 11:53:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11572707 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5AA4F92A for ; Wed, 27 May 2020 12:01:31 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 34F61207CB for ; Wed, 27 May 2020 12:01:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="eiAUN+K3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34F61207CB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3dqXg9nt+Do+4Dx7+LoqwwMjuXH8PE8wJdlXtIe9cLg=; b=eiAUN+K3EwFU+S VQhrVbGjcGhOtv0rw/0KY5xMJw/LRLJMnvNaHngvbp/Zd8RUv+H+ZeyM7aA9zBKKm/SLgNcuHVlmf Oiyv++sz/MXrb3NAOLApStPBQiBoSy8h4W19E5nQ4x8lyVQY7AH0rohIS3SLOmh0gJu4R+Y7VG+xw I9JyPGZHF3Nf5R1o4CWMQW1ilGfiGr53z+DZfNV+gJEW9oi4X1IT1OuZwla04DosL7tlHkYV6jytR WbUGdy+1LgkdcAojLxBe+pr+dCwZDczuGTx2pYwQvB+BGp4ROs2gvtxyZ9hyoMAwXUbzabhUH71s3 adN0D1z1CGXFQ1qJaaIw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jdukO-00009g-TJ; Wed, 27 May 2020 12:01:24 +0000 Received: from mx2.suse.de ([195.135.220.15]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jdudg-0006jr-2u; Wed, 27 May 2020 11:54:30 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id ABBA3AC91; Wed, 27 May 2020 11:54:28 +0000 (UTC) From: Nicolas Saenz Julienne To: bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , Nicolas Saenz Julienne Subject: [RFC 15/50] staging: vc04_services: bcm2835-audio: Use vchi_msg_hold() Date: Wed, 27 May 2020 13:53:20 +0200 Message-Id: <20200527115400.31391-16-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200527115400.31391-1-nsaenzjulienne@suse.de> References: <20200527115400.31391-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200527_045428_284523_E849514A X-CRM114-Status: GOOD ( 15.52 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [195.135.220.15 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [195.135.220.15 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, kernel-list@raspberrypi.com, laurent.pinchart@ideasonboard.com, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org vchi_msg_dequeue() provides the same functionality as vchi_msg_hold() except it copies the message data as opposed to the later which provides the data in place. The copying is done on a local variable, so there is no need to keep the message out the function's bounds, so use vchi_msg_hold() instead. Signed-off-by: Nicolas Saenz Julienne --- .../bcm2835-audio/bcm2835-vchiq.c | 25 +++++++++++-------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c index 62eef233275f..5018b5baa009 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c @@ -94,31 +94,34 @@ static void audio_vchi_callback(void *param, void *msg_handle) { struct bcm2835_audio_instance *instance = param; - struct vc_audio_msg m; - int msg_len; + struct vchi_held_msg handle; + struct vc_audio_msg *m; + unsigned size; int status; if (reason != VCHI_CALLBACK_MSG_AVAILABLE) return; - status = vchi_msg_dequeue(instance->service, - &m, sizeof(m), &msg_len, VCHI_FLAGS_NONE); + status = vchi_msg_hold(instance->service, (void **)&m, &size, + VCHI_FLAGS_NONE, &handle); if (status) return; - if (m.type == VC_AUDIO_MSG_TYPE_RESULT) { - instance->result = m.result.success; + if (m->type == VC_AUDIO_MSG_TYPE_RESULT) { + instance->result = m->result.success; complete(&instance->msg_avail_comp); - } else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) { - if (m.complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 || - m.complete.cookie2 != VC_AUDIO_WRITE_COOKIE2) + } else if (m->type == VC_AUDIO_MSG_TYPE_COMPLETE) { + if (m->complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 || + m->complete.cookie2 != VC_AUDIO_WRITE_COOKIE2) dev_err(instance->dev, "invalid cookie\n"); else bcm2835_playback_fifo(instance->alsa_stream, - m.complete.count); + m->complete.count); } else { - dev_err(instance->dev, "unexpected callback type=%d\n", m.type); + dev_err(instance->dev, "unexpected callback type=%d\n", m->type); } + + vchi_held_msg_release(&handle); } static int