From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48874) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ckofE-0000Mw-CX for qemu-devel@nongnu.org; Mon, 06 Mar 2017 04:10:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ckofA-0000R5-EL for qemu-devel@nongnu.org; Mon, 06 Mar 2017 04:10:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38888) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ckofA-0000Qw-8n for qemu-devel@nongnu.org; Mon, 06 Mar 2017 04:10:40 -0500 Message-ID: <1488791436.18653.22.camel@redhat.com> From: Gerd Hoffmann Date: Mon, 06 Mar 2017 10:10:36 +0100 In-Reply-To: <38265DF9-8C55-4B4E-9222-F75C5E675ABB@gmail.com> References: <38265DF9-8C55-4B4E-9222-F75C5E675ABB@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 Subject: Re: [Qemu-devel] Patch causes Mac OS X to print dead controller messages List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Programmingkid Cc: Li Qiang , qemu-devel qemu-devel On Mi, 2017-03-01 at 23:08 -0500, Programmingkid wrote: > commit 95ed56939eb2eaa4e2f349fe6dcd13ca4edfd8fb > usb: ohci: limit the number of link eds >=20 > This patch causes Mac OS X to continuously print this message: > USBF: 35.508 AppleUSBOHCI[0x1187000] Watchdog detected dead controller (h= cca #: 0, hc#: 863) >=20 > I used git bisect to find this patch. None of the USB devices work when c= onnected to the OHCI USB controller. Hmm, ok, appearently the limit is too strict for macos. Can you try to increase ED_LINK_LIMIT ? thanks, Gerd