From owner-svn-src-all@freebsd.org Fri Jan 15 12:09:17 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 38343A842FC; Fri, 15 Jan 2016 12:09:17 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 04246194E; Fri, 15 Jan 2016 12:09:16 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u0FC9Fxx014862; Fri, 15 Jan 2016 12:09:15 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u0FC9F9d014861; Fri, 15 Jan 2016 12:09:15 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201601151209.u0FC9F9d014861@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Fri, 15 Jan 2016 12:09:15 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r294088 - head/sys/dev/usb X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jan 2016 12:09:17 -0000 Author: hselasky Date: Fri Jan 15 12:09:15 2016 New Revision: 294088 URL: https://svnweb.freebsd.org/changeset/base/294088 Log: Use the recently added "make_dev_s()" function to solve old race setting the si_drv1 field in "struct cdev" when creating new character devices. Modified: head/sys/dev/usb/usb_device.c Modified: head/sys/dev/usb/usb_device.c ============================================================================== --- head/sys/dev/usb/usb_device.c Fri Jan 15 11:40:41 2016 (r294087) +++ head/sys/dev/usb/usb_device.c Fri Jan 15 12:09:15 2016 (r294088) @@ -1962,6 +1962,7 @@ usb_make_dev(struct usb_device *udev, co int fi, int rwmode, uid_t uid, gid_t gid, int mode) { struct usb_fs_privdata* pd; + struct make_dev_args args; char buffer[32]; /* Store information to locate ourselves again later */ @@ -1980,17 +1981,19 @@ usb_make_dev(struct usb_device *udev, co pd->bus_index, pd->dev_index, pd->ep_addr); } - pd->cdev = make_dev(&usb_devsw, 0, uid, gid, mode, "%s", devname); + /* Setup arguments for make_dev_s() */ + make_dev_args_init(&args); + args.mda_devsw = &usb_devsw; + args.mda_uid = uid; + args.mda_gid = gid; + args.mda_mode = mode; + args.mda_si_drv1 = pd; - if (pd->cdev == NULL) { + if (make_dev_s(&args, &pd->cdev, "%s", devname) != 0) { DPRINTFN(0, "Failed to create device %s\n", devname); free(pd, M_USBDEV); return (NULL); } - - /* XXX setting si_drv1 and creating the device is not atomic! */ - pd->cdev->si_drv1 = pd; - return (pd); }