From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f180.google.com ([209.85.214.180]:47224 "EHLO mail-ob0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753423AbbBZRsu (ORCPT ); Thu, 26 Feb 2015 12:48:50 -0500 Received: by mail-ob0-f180.google.com with SMTP id vb8so12732619obc.11 for ; Thu, 26 Feb 2015 09:48:50 -0800 (PST) Date: Thu, 26 Feb 2015 11:48:47 -0600 From: Bjorn Helgaas To: Takashi Iwai Cc: Alnie , "linux-pci@vger.kernel.org" Subject: Re: PCI Issues with ExpressCard/54 Audio Device Message-ID: <20150226174847.GB25765@google.com> References: <1703881568.13072732.1424911985807.JavaMail.zimbra@comcast.net> <1602089933.13084034.1424913145538.JavaMail.zimbra@comcast.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-pci-owner@vger.kernel.org List-ID: On Thu, Feb 26, 2015 at 09:20:59AM +0100, Takashi Iwai wrote: > FYI, during the previous debug sessions, we found that the sound > driver gets only 0xff for mapped register accesses, so I suggested to > report to PCI devs. IIRC, the non-hotplug board with this chip worked > in the past. I skimmed the previous emails but I missed this part. Did you add instrumentation to the driver, or is it just obvious from the way the driver behaves that we're getting 0xff? Bjorn