| Message ID | 1421247905-3749-6-git-send-email-hanjun.guo@linaro.org (mailing list archive) |
|---|---|
| State | RFC, archived |
| Headers | show |
On 01/14/2015 09:04 AM, Hanjun Guo wrote: > From: Graeme Gregory <graeme.gregory@linaro.org> > > If the early boot methods of acpi are happy that we have valid ACPI > tables and acpi=force has been passed, then do not unflat devicetree > effectively disabling further hardware probing from DT. > > Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > Tested-by: Yijing Wang <wangyijing@huawei.com> > Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org> > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> > --- Tested-by: Mark Langsdorf <mlangsdo@redhat.com> -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Jan 14, 2015 at 03:04:53PM +0000, Hanjun Guo wrote: > From: Graeme Gregory <graeme.gregory@linaro.org> > > If the early boot methods of acpi are happy that we have valid ACPI > tables and acpi=force has been passed, then do not unflat devicetree > effectively disabling further hardware probing from DT. > > Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > Tested-by: Yijing Wang <wangyijing@huawei.com> > Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org> > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> > --- > arch/arm64/kernel/setup.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c > index 4580ed3..5d139e1 100644 > --- a/arch/arm64/kernel/setup.c > +++ b/arch/arm64/kernel/setup.c > @@ -411,7 +411,8 @@ void __init setup_arch(char **cmdline_p) > efi_idmap_init(); > early_ioremap_reset(); > > - unflatten_device_tree(); > + if (acpi_disabled) > + unflatten_device_tree(); Nitpick: you could actually squash this patch into the previous one to keep the acpi disable/enable logic in one place.
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 4580ed3..5d139e1 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -411,7 +411,8 @@ void __init setup_arch(char **cmdline_p) efi_idmap_init(); early_ioremap_reset(); - unflatten_device_tree(); + if (acpi_disabled) + unflatten_device_tree(); psci_init();