From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752917Ab1A1PIk (ORCPT ); Fri, 28 Jan 2011 10:08:40 -0500 Received: from astoria.ccjclearline.com ([64.235.106.9]:47949 "EHLO astoria.ccjclearline.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751731Ab1A1PIj (ORCPT ); Fri, 28 Jan 2011 10:08:39 -0500 Date: Fri, 28 Jan 2011 10:08:07 -0500 (EST) From: "Robert P. J. Day" X-X-Sender: rpjday@localhost6.localdomain6 To: Chris Wilson cc: dri-devel@lists.freedesktop.org, Len Brown , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org Subject: Re: has the i915 "black screen" boot issue returned? [BISECTED] In-Reply-To: <1bdc18$jdthb8@fmsmga002.fm.intel.com> Message-ID: References: <1bdc18$jdgfni@fmsmga002.fm.intel.com> <0d30dc$ksovh8@orsmga001.jf.intel.com> <849307$bbem1h@azsmga001.ch.intel.com> <0d30dc$kt3gd6@orsmga001.jf.intel.com> <849307$bbh907@azsmga001.ch.intel.com> <1bdc18$jdthb8@fmsmga002.fm.intel.com> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - astoria.ccjclearline.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - crashcourse.ca X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 28 Jan 2011, Chris Wilson wrote: > On Fri, 28 Jan 2011 09:51:01 -0500 (EST), "Robert P. J. Day" wrote: > > sadly, no change -- still black screen. again, rebooted > > successfully under commit 8a327f23. just to be clear, here's "git > > diff": > > > > $ git diff > > diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h > > index 7180013..e035f3c 100644 > > --- a/include/linux/acpi_io.h > > +++ b/include/linux/acpi_io.h > > @@ -7,7 +7,7 @@ > > static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, > > acpi_size size) > > { > > - return ioremap_cache(phys, size); > > + return ioremap(phys, size); > > } > > Ok, that implies the new mapping is fine and not the cause of the issue. > > Instead you have some OpRegion related regression hidden until till now > because the conflicting mapping disabled it for i915. > > That would be easy to test by returning early in intel_opregion_setup(): > > diff --git a/drivers/gpu/drm/i915/intel_opregion.c > b/drivers/gpu/drm/i915/intel_ > index 9efccb9..8c93201 100644 > --- a/drivers/gpu/drm/i915/intel_opregion.c > +++ b/drivers/gpu/drm/i915/intel_opregion.c > @@ -470,6 +470,8 @@ int intel_opregion_setup(struct drm_device *dev) > u32 asls, mboxes; > int err = 0; > > + return -ENOTSUPP; > + > > pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); > DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); > if (asls == 0) { > so you want me to revert to a stock b705120e before doing the above? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================