From owner-freebsd-current@FreeBSD.ORG Mon Feb 1 12:18:38 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id ABD00106566C for ; Mon, 1 Feb 2010 12:18:38 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.155]) by mx1.freebsd.org (Postfix) with ESMTP id 33A048FC1C for ; Mon, 1 Feb 2010 12:18:37 +0000 (UTC) Received: by fg-out-1718.google.com with SMTP id 19so25030fgg.13 for ; Mon, 01 Feb 2010 04:18:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :x-enigmail-version:content-type:content-transfer-encoding; bh=6xr8AovTV10ho5vRzdB5x95dOd4t7mvb2ybenzCr24E=; b=g+SgQtzEh/U2BPutML0iSwJT1Ed8N5IeTnXNtmKiZcRYpCugv5s3UyD18OYInJZWcb FGQ/M22s0HlVh1IX7MaNebLOCG1K2obXwrAQOPPS+AeSUpW/AIArixm6UBiG6zp3/h2N GDHXMJSRYRNpKpkIHxP09AucB/rCSbEeOdPsk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=pbgMC0EOpXTfvdfwLBprddHQKJUIwMrDgihWbc+8M7vKU9yqcffcPVWYimdfmQToza mJ8Kr1blW6RjRkvxlbFHOoUqe3Hwdlp0J3/rVZk99GA8ZwlmfE8yYxBzhu1Dr2Mh3bMM voRd5nklTyrUSwhoy4Xn8voo+0U76fHfXVhvE= Received: by 10.103.76.37 with SMTP id d37mr2339126mul.105.1265026710426; Mon, 01 Feb 2010 04:18:30 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id y37sm18977268mug.8.2010.02.01.04.18.29 (version=SSLv3 cipher=RC4-MD5); Mon, 01 Feb 2010 04:18:29 -0800 (PST) Sender: Alexander Motin Message-ID: <4B66C689.2000906@FreeBSD.org> Date: Mon, 01 Feb 2010 14:18:17 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Michael Reifenberger References: <4B636812.8060403@FreeBSD.org> <20100130112749.GA1660@garage.freebsd.pl> <20100130114451.GB1660@garage.freebsd.pl> <20100201092334.GB1743@garage.freebsd.pl> <4B66A669.2070406@FreeBSD.org> In-Reply-To: X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: FreeBSD-Current Subject: Re: Odd ada(4) failures when trying using USB scanner X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Feb 2010 12:18:38 -0000 Michael Reifenberger wrote: > I'm using -current as of r202157. > > When attaching an epson USB scanner and trying to `scanimage -L` > I get a freeze for some time and the following console logs: > ... > ata1: FAILURE - odd-sized DMA transfer attempt 5 % 2 > ata1: setting up DMA failed I would say that scanner application tries to probe all CAM devices, looking for scanner. While doing it, it uses SCSI/ATAPI commands with odd-sized transfer sizes. It causes errors from ata(4) and triggers bug in IXP700 AHCI controller. Odd-sized requests are generally not supported by ATA/SATA. Second problem is in work now. -- Alexander Motin