From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [PATCH] igb_uio: fix uevent montior issue
Date: Thu, 08 Feb 2018 23:01:43 +0100
Message-ID: <10497764.pzdNBqvViL@xps>
References: <1517306475-2153-1-git-send-email-jia.guo@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7Bit
Cc: dev@dpdk.org, jingjing.wu@intel.com, jianfeng.tan@intel.com
To: Jeff Guo <jia.guo@intel.com>, ferruh.yigit@intel.com
Return-path: <dev-bounces@dpdk.org>
Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com
 [66.111.4.26]) by dpdk.org (Postfix) with ESMTP id 465A81B7C3
 for <dev@dpdk.org>; Thu,  8 Feb 2018 23:01:49 +0100 (CET)
In-Reply-To: <1517306475-2153-1-git-send-email-jia.guo@intel.com>
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

30/01/2018 11:01, Jeff Guo:
> udev could not detect remove and add event of device when hotplug in
> and out devices, that related with the fix about using pointer of
> rte_uio_pci_dev as dev_id instead of uio_device for irq device handler,
> that would result igb uio irq failure when kernel version after than 3.17.
> so this patch correct it by use kernel version check before handle the
> pci interrupt.
> 
> Fixes: 6b9ed026a870 ("igb_uio: fix build with kernel <= 3.17")
> Signed-off-by: Jeff Guo <jia.guo@intel.com>
> ---
> +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
>  	struct rte_uio_pci_dev *udev = (struct rte_uio_pci_dev *)dev_id;
>  	struct uio_info *info = &udev->info;
> -
> +#else
> +	struct uio_device *idev = (struct uio_device *)dev_id;
> +	struct uio_info *info = idev->info;
> +	struct rte_uio_pci_dev *udev = info->priv;
> +#endif

Can we avoid checking Linux version number?
This method won't work with kernel backports.