On Sat, 15 Jan 2011 21:38:10 +0100
"Rafael J. Wysocki" <rjw@xxxxxxx> wrote:
> On Saturday, January 15, 2011, Andres Salomon wrote:
> > On Sat, 15 Jan 2011 14:01:18 +0100
> > "Rafael J. Wysocki" <rjw@xxxxxxx> wrote:
> >
> > > On Saturday, January 15, 2011, Andres Salomon wrote:
> > > > On Fri, 14 Jan 2011 23:24:27 -0500 (EST)
> > > > Len Brown <lenb@xxxxxxxxxx> wrote:
> > > >
> > > > [...]
> > > > > > This patch causes apei_hest_parse to check both
> > > > > > hest_disabled and acpi_pci_disabled before continuing.
> > > > > > With it, the XO-1 boots properly.
> > > > >
> > > > > The X0-1 has no ACPI support, and thus you are running
> > > > > with acpi_disabled=1, yes?
> > > >
> > > > The XO-1 has no ACPI support, but ACPI support is enabled in the
> > > > kernel (as the XO-1.5 does have ACPI support, and the same
> > > > kernel is used between both) and I'm not passing any arguments
> > > > to the kernel regarding it. The kernel's ACPI code detects that
> > > > it's not there and disables it (the kernel message that's seen
> > > > is "ACPI: Interpreter disabled.")
> > > >
> > > > This is what sets apci_pci_disabled to 1; I'm not doing it
> > > > manually.
> > >
> > > Hmm. Does the appended patch help instead?
> >
> > Nope. acpi_hest_init returns immediately if acpi_disabled, and thus
> > never sets hest_disable. You either need to set hest_disable, or
> > ensure apei_hest_parse checks more than just hest_disable.
>
> OK, so the new one below should help, right?
Yes, that looks better (though you probably just want to use 'goto
err;' instead). I can test it later today.
>
> Thanks,
> Rafael
>
> ---
> drivers/acpi/apei/hest.c | 4 +++-
> drivers/acpi/pci_root.c | 4 ++--
> 2 files changed, 5 insertions(+), 3 deletions(-)
>
> Index: linux-2.6/drivers/acpi/pci_root.c
> ===================================================================
> --- linux-2.6.orig/drivers/acpi/pci_root.c
> +++ linux-2.6/drivers/acpi/pci_root.c
> @@ -631,11 +631,11 @@ static int acpi_pci_root_remove(struct a
>
> static int __init acpi_pci_root_init(void)
> {
> + acpi_hest_init();
> +
> if (acpi_pci_disabled)
> return 0;
>
> - acpi_hest_init();
> -
> pci_acpi_crs_quirks();
> if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
> return -ENODEV;
> Index: linux-2.6/drivers/acpi/apei/hest.c
> ===================================================================
> --- linux-2.6.orig/drivers/acpi/apei/hest.c
> +++ linux-2.6/drivers/acpi/apei/hest.c
> @@ -201,8 +201,10 @@ void __init acpi_hest_init(void)
> int rc = -ENODEV;
> unsigned int ghes_count = 0;
>
> - if (acpi_disabled)
> + if (acpi_disabled) {
> + hest_disable = 1;
> return;
> + }
>
> if (hest_disable) {
> pr_info(HEST_PFX "Table parsing disabled.\n");
> --
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