linux-kernel - Re: regression on HP zx1 platform from ACPI autoload modules patches

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Date:	Tue, 31 Jul 2007 15:01:02 +0200
From:	Thomas Renninger <trenn@...e.de>
To:	Doug Chapman <doug.chapman@...com>
Cc:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	linux-ia64@...r.kernel.org, Len Brown <lenb@...nel.org>
Subject: Re: regression on HP zx1 platform from ACPI autoload modules
	patches - PATCH that fixes it

On Tue, 2007-07-31 at 08:06 -0400, Doug Chapman wrote:
> On Tue, 2007-07-31 at 01:07 +0200, Michal Piotrowski wrote:
> > Hi Doug,
> > 
> > On 31/07/07, Doug Chapman <doug.chapman@...com> wrote:
> > > I am seeing a regression on the HP ia64 zx1 platforms when using
> > > a .config with CONFIG_IA64_HP_ZX1=y.  Oddly it works OK with
> > > CONFIG_IA64_GENERIC=y.
> > >
> > >
> > > During bootup it panics with:
> > >
> > > Kernel panic - not syncing: Unable to find SBA IOMMU: Try a generic or DIG kernel
> > >
> > > I can provide the full console output if that is helpful.
> > 
> > Yes, it is very useful.
> > 
> > >  Also, please let
> > > me know if there is any other data I can provide that would be helpful.
> > 
> > Kernel .config file.
> 
> 
> Michal,
> 
> Attached are the full console output up to the panic and the .config
> file I used to build the kernel.  Let me know if there is anything else
> you need or if you would like me to try a patch.

This patch should fix it.
It's already sent to Len. Bjorn/Myron already tested this one and gave
an acked-by, but it has not hit Len's git tree yet.
Len?
Or should it be picked up by an IA64 tree?

   Thomas

-----------------

Use new acpi_device_id struct for HID init in ia64/hp/common/sba_iommu.c

Forgot to adjust this one with the acpi autoloading patches.

Signed-off-by: Thomas Renninger <trenn@...e.de>
Acked-by: Myron Stowe <myron.stowe@...com>

---
 arch/ia64/hp/common/sba_iommu.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Index: linux-2.6.23-rc1/arch/ia64/hp/common/sba_iommu.c
===================================================================
--- linux-2.6.23-rc1.orig/arch/ia64/hp/common/sba_iommu.c
+++ linux-2.6.23-rc1/arch/ia64/hp/common/sba_iommu.c
@@ -2015,9 +2015,14 @@ acpi_sba_ioc_add(struct acpi_device *dev
 	return 0;
 }
 
+static const struct acpi_device_id hp_ioc_iommu_device_ids[] = {
+	{"HWP0001", 0},
+	{"HWP0004", 0},
+	{"", 0},
+};
 static struct acpi_driver acpi_sba_ioc_driver = {
 	.name		= "IOC IOMMU Driver",
-	.ids		= "HWP0001,HWP0004",
+	.ids		= hp_ioc_iommu_device_ids,
 	.ops		= {
 		.add	= acpi_sba_ioc_add,
 	},




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