From patchwork Tue Jun 23 16:42:11 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: 11621125 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 3C5FB92A for ; Tue, 23 Jun 2020 16:58:18 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 14BB82076E for ; Tue, 23 Jun 2020 16:58:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="G6CC3Tm/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 14BB82076E 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=merlin.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=8uk4lRXAx9uZpuH1l/Hr4K+DGDX+qbeMFdwBmxwvE+Q=; b=G6CC3Tm/YGRfcvbwsEFO5dP/k dgWhTzbhryrdZChnHWx9d6Tb8nZLhAk380W+Fc9kYEK2GIILImABa7qrpOu3JsAANSyqGMkIbTHWA 24zTDyBK+en57Jk45ctFeL6AnvtsfFZEv5Cfb+2pt3w5M90MNg6m2RSbygx67n8rIW5f8gr7kHNs4 dWa7h7huWnr/J1ykb9sen8dOf9/z3WMMCS6/pErJBvuZZ/SMvHsv+baBkqi6WKDTBUBHG47xk2uxP cwcm4JVpLYOTEpX8sheRkZw266OCEbeRno6fPdqv6nDpzTmYWz7L2qPe++utB23HS0FJ2KFIVldZl 9oqbQgesA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jnmCO-0002hF-L2; Tue, 23 Jun 2020 16:55:05 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jnm31-0005Qs-I8; Tue, 23 Jun 2020 16:45:32 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C9213B13E; Tue, 23 Jun 2020 16:45:21 +0000 (UTC) From: Nicolas Saenz Julienne To: gregkh@linuxfoundation.org Subject: [PATCH 25/50] staging: vchiq: Introduce vchiq_validate_params() Date: Tue, 23 Jun 2020 18:42:11 +0200 Message-Id: <20200623164235.29566-26-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200623164235.29566-1-nsaenzjulienne@suse.de> References: <20200623164235.29566-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.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, linux-kernel@vger.kernel.org, Nicolas Saenz Julienne , laurent.pinchart@ideasonboard.com, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org When adding a new service validate the configuration parameters provided, and remove unnecessary checks in vchi, now that we have validated service's config. Signed-off-by: Nicolas Saenz Julienne --- .../interface/vchiq_arm/vchiq_core.c | 15 +++++++++++++++ .../interface/vchiq_arm/vchiq_shim.c | 4 ---- 2 files changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c index ae9183db44ee..46b09b7154f8 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c @@ -2265,6 +2265,16 @@ vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero) return VCHIQ_ERROR; } +static int vchiq_validate_params(const struct vchiq_service_params *params) +{ + if (!params->callback || !params->fourcc) { + vchiq_loud_error("Can't add service, invalid params\n"); + return -EINVAL; + } + + return 0; +} + /* Called from application thread when a client or server service is created. */ struct vchiq_service * vchiq_add_service_internal(struct vchiq_state *state, @@ -2275,8 +2285,13 @@ vchiq_add_service_internal(struct vchiq_state *state, struct vchiq_service *service; struct vchiq_service __rcu **pservice = NULL; struct vchiq_service_quota *service_quota; + int ret; int i; + ret = vchiq_validate_params(params); + if (ret) + return NULL; + service = kmalloc(sizeof(*service), GFP_KERNEL); if (!service) return service; diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c index e09c595d6f9d..dcf8776834b1 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c @@ -271,15 +271,11 @@ static enum vchiq_status shim_callback(enum vchiq_reason reason, struct vchi_service *service = (struct vchi_service *)VCHIQ_GET_SERVICE_USERDATA(handle); - if (!service->callback) - goto release; - if (reason == VCHIQ_MESSAGE_AVAILABLE) vchiu_queue_push(&service->queue, header); service->callback(service->callback_param, reason, bulk_user); -release: return VCHIQ_SUCCESS; }