[PATCH] ACPICA: AML interpreter: add region addresses in global list during initialization

[PATCH] ACPICA: AML interpreter: add region addresses in global list during initialization

[Erik Schmauss]

The table load process omitted adding the operation region address
range to the global list. This omission is problematic because the OS
queries the global list to check for address range conflicts before
deciding which drivers to load. This commit may result in warning
messages that look like the following:

[    7.871761] ACPI Warning: system_IO range 0x00000428-0x0000042F conflicts with op_region 0x00000400-0x0000047F (\PMIO) (20180531/utaddress-213)
[    7.871769] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

However, these messages do not signify regressions. It is a result of
properly adding address ranges within the global address list.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=200011
Tested-by: Jean-Marc Lenoir <archlinux@jihemel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
---
 drivers/acpi/acpica/dsopcode.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index e9fb0bf3c8d2..78f9de260d5f 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -417,6 +417,10 @@ acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
 			  ACPI_FORMAT_UINT64(obj_desc->region.address),
 			  obj_desc->region.length));
 
+	status = acpi_ut_add_address_range(obj_desc->region.space_id,
+					   obj_desc->region.address,
+					   obj_desc->region.length, node);
+
 	/* Now the address and length are valid for this opregion */
 
 	obj_desc->region.flags |= AOPOBJ_DATA_VALID;
-- 
2.17.1

Re: [PATCH] ACPICA: AML interpreter: add region addresses in global list during initialization

[Greg KH]

On Wed, Oct 17, 2018 at 02:09:35PM -0700, Erik Schmauss wrote:
> The table load process omitted adding the operation region address
> range to the global list. This omission is problematic because the OS
> queries the global list to check for address range conflicts before
> deciding which drivers to load. This commit may result in warning
> messages that look like the following:
> 
> [    7.871761] ACPI Warning: system_IO range 0x00000428-0x0000042F conflicts with op_region 0x00000400-0x0000047F (\PMIO) (20180531/utaddress-213)
> [    7.871769] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
> 
> However, these messages do not signify regressions. It is a result of
> properly adding address ranges within the global address list.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=200011
> Tested-by: Jean-Marc Lenoir <archlinux@jihemel.com>
> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
> ---

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>