From: Auger Eric <eric.au...@redhat.com>
If I2C is built as a module, ACPI_I2C_OPREGION cannot be set
and any ACPI opregion calls targeting I2C fail with no opregion found.
Commit da3c6647ee08 ("I2C/ACPI: Clean up I2C ACPI code and Add
CONFIG_I2C_ACPI config") says following:
"Current there is a race between removing I2C ACPI operation region
and ACPI AML code accessing."
This patch forces core I2C support to be compiled as a built-in
module if ACPI is selected as code is not ready for dynamic module
removal.
Signed-off-by: Eric Auger <eric.au...@redhat.com>
Signed-off-by: Sinan Kaya <ok...@codeaurora.org>
---
drivers/acpi/Kconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 4650539..5b48098 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -9,6 +9,8 @@ menuconfig ACPI
depends on IA64 || X86 || ARM64
depends on PCI
select PNP
+ # force building I2C in on ACPI systems, for opregion availability
+ imply I2C
default y if (IA64 || X86)
help
Advanced Configuration and Power Interface (ACPI) support for
--
1.9.1
