From owner-freebsd-stable@FreeBSD.ORG Wed Oct 8 19:30:53 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 07E0614A for ; Wed, 8 Oct 2014 19:30:53 +0000 (UTC) Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D8A73E79 for ; Wed, 8 Oct 2014 19:30:52 +0000 (UTC) Received: from ralph.baldwin.cx (pool-173-70-85-31.nwrknj.fios.verizon.net [173.70.85.31]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id BE482B9A1 for ; Wed, 8 Oct 2014 15:30:51 -0400 (EDT) From: John Baldwin To: freebsd-stable@freebsd.org Subject: [PATCH] Add locking to iir(4): test or the driver will be removed Date: Wed, 08 Oct 2014 14:59:57 -0400 Message-ID: <4502575.2pjX9fa7nd@ralph.baldwin.cx> User-Agent: KMail/4.12.5 (FreeBSD/10.1-BETA2; KDE/4.12.5; amd64; ; ) MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Wed, 08 Oct 2014 15:30:51 -0400 (EDT) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Oct 2014 19:30:53 -0000 This patch fixes various issues in the iir(4) driver and adds locking to make it MPSAFE. The patch is against HEAD though I expect it probably applies to 9 and 10 as well. Please test with INVARIANTS enabled. http://www.FreeBSD.org/~jhb/patches/iir_locking.patch Note that this driver is using a deprecated API that will be removed in 11. If no one tests updates to this driver then it is not feasible to continue maintaining it in the tree. In that case, it will be removed from HEAD one month from today. -- John Baldwin