We have a few cases where we want to access struct device dev field in
struct acpi_device from generic code that is build also without CONFIG_ACPI.
Provide here a minimal struct acpi_device stub that allows to build such a
code without adding new #ifdef CONFIG_ACPI churn. This should not increase
section sizes if code is protected by ACPI_COMPANION() runtime checks as
those will be optimized out by later compiler stages in case CONFIG_ACPI is
not set.
Signed-off-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
---
Rafael, instead of this we could also have an accessor but adev->dev looked
better in actual code and size vmlinux didn't change for x86_64_defconfig
with CONFIG_ACPI is not set nor for omap2plus_defconfig.
---
include/linux/acpi.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 0da49ed..df444e1 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -414,6 +414,10 @@ static inline bool acpi_driver_match_device(struct device *dev,
#else /* !CONFIG_ACPI */
+struct acpi_device {
+ struct device dev;
+};
+
#define acpi_disabled 1
#define ACPI_COMPANION(dev) (NULL)
--
1.8.4.2
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