From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id E1D682C5E for ; Mon, 26 Mar 2018 20:21:01 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Mar 2018 11:20:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,365,1517904000"; d="scan'208";a="42332367" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.63]) ([10.237.221.63]) by orsmga001.jf.intel.com with ESMTP; 26 Mar 2018 11:20:56 -0700 To: Scott Branden , Ajit Khaparde , dev@dpdk.org Cc: Darren Edamura , Rahul Gupta References: <20180321180629.58318-1-ajit.khaparde@broadcom.com> <20180321180629.58318-5-ajit.khaparde@broadcom.com> <9c01c36e-b2a3-db28-f9b8-ccae8f33e71d@intel.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH 4/4] igb_uio: bind error if pcie bridge X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Mar 2018 18:21:03 -0000 On 3/26/2018 7:05 PM, Scott Branden wrote: > Hi Ferruh, > > > On 18-03-26 10:24 AM, Ferruh Yigit wrote: >> On 3/21/2018 6:06 PM, Ajit Khaparde wrote: >>> From: Darren Edamura >>> >>> Probe function should exit immediately if pcie bridge detected >>> >>> Signed-off-by: Darren Edamura >>> Signed-off-by: Rahul Gupta >>> Signed-off-by: Scott Branden >>> Signed-off-by: Ajit Khaparde >>> --- >>> lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >>> diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c >>> index 4cae4dd27..3fabbfc4d 100644 >>> --- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c >>> +++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c >>> @@ -473,6 +473,9 @@ igbuio_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) >>> void *map_addr; >>> int err; >>> >>> + if (pci_is_bridge(dev)) >>> + return -ENODEV; >> What do you think printing a log here? > I think it brings little value.  ENODEV is already returned? User should not provide bridge address at first place, I guess this is a protection in case user provides bridge address by mistake. In that case no device will be probed and user won't have any idea why. I think a log in dmesg saying bridge device is provided may help to the user. >> >>> + >>> udev = kzalloc(sizeof(struct rte_uio_pci_dev), GFP_KERNEL); >>> if (!udev) >>> return -ENOMEM; >>> > Regards, >  Scott >