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| author | Lv Zheng <lv.zheng@intel.com> | 2013-12-06 16:52:05 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-12-07 01:24:33 +0100 |
| commit | 27d50c82714f6477ac690034b37d202f76eb4f70 (patch) | |
| tree | 67a1d4e0e73b7e0167a7406ec962718ae2d58305 /include/linux/acpi.h | |
| parent | c099eacbcaec4475936fbf73e499507728ce47e1 (diff) | |
| download | lwn-27d50c82714f6477ac690034b37d202f76eb4f70.tar.gz lwn-27d50c82714f6477ac690034b37d202f76eb4f70.zip | |
ACPI / i915: Fix incorrect <acpi/acpi.h> inclusions via <linux/acpi_io.h>
To avoid build problems and breaking dependencies between ACPI header
files, <acpi/acpi.h> should not be included directly by code outside
of the ACPI core subsystem. However, that is possible if
<linux/acpi_io.h> is included, because that file contains
a direct inclusion of <acpi/acpi.h>.
For this reason, remove the direct <acpi/acpi.h> inclusion from
<linux/acpi_io.h>, move that file from include/linux/ to include/acpi/
and make <linux/acpi.h> include it for CONFIG_ACPI set along with the
other ACPI header files. Accordingly, Remove the inclusions of
<linux/acpi_io.h> from everywhere.
Of course, that causes the contents of the new <acpi/acpi_io.h> file
to be available for CONFIG_ACPI set only, so intel_opregion.o that
depends on it should also depend on CONFIG_ACPI (and it really should
not be compiled for CONFIG_ACPI unset anyway).
References: https://01.org/linuxgraphics/sites/default/files/documentation/acpi_igd_opregion_spec.pdf
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d9099b15b472..726a6aa62b64 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -42,6 +42,7 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #include <acpi/acpi_numa.h> +#include <acpi/acpi_io.h> #include <asm/acpi.h> static inline acpi_handle acpi_device_handle(struct acpi_device *adev) |