From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755269AbXKSATo (ORCPT ); Sun, 18 Nov 2007 19:19:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752238AbXKSATg (ORCPT ); Sun, 18 Nov 2007 19:19:36 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:42322 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752162AbXKSATf (ORCPT ); Sun, 18 Nov 2007 19:19:35 -0500 Date: Sun, 18 Nov 2007 16:17:27 -0800 From: Arjan van de Ven To: Larry Finger Cc: LKML , Linus Torvalds Subject: Re: Regression in 2.6.24-rc3 - 64-bit DMA fails for BCM94311MCG rev 02 Message-ID: <20071118161727.106e7eea@laptopd505.fenrus.org> In-Reply-To: <4740D323.3090107@lwfinger.net> References: <4740D323.3090107@lwfinger.net> Organization: Intel X-Mailer: Claws Mail 3.0.2 (GTK+ 2.12.1; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 18 Nov 2007 18:04:51 -0600 Larry Finger wrote: > I get a failure of 64-bit DMA on a BCM94311MCG rev 02 wireless > interface running on x86_64 using an AMD Turion 64 X2 processor on an > HP Pavilion dv2125nr laptop. The error code indicates that the > interface is getting a descriptor read error, even though the > descriptor ring and all the DMA buffers have been checked when > allocated. This particular card version is newly supported; however, > it was working correctly on 2.6.24-rc2. > worth adding a pci_set_dma_mask(pdev, DMA_32BIT_MASK); in the driver, just after pci_enable_device(); (also check if there's other pci_set_dma_mask functions, to make sure it doesn't get set back to 64 bit) -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org