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ACPI: Clean up inclusions of ACPI header files

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Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
<acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
inclusions and remove some inclusions of those files that aren't
necessary.

First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
<linux/acpi.h> includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.

Second, there are ordering dependencies between those files that always
have to be met.  Namely, it is required that <acpi/acpi_bus.h> be included
prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
latter depends on are always there.  And <acpi/acpi.h> which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
<linux/acpi.h> as appropriate.

Signed-off-by: Lv Zheng <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Matthew Garrett <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Acked-by: Bjorn Helgaas <[email protected]> (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk <[email protected]> (Xen stuff)
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Lv Zheng 2013-12-03 08:49:16 +08:00 • committed by Rafael J. Wysocki
commit 8b48463f89
103 changed files with 80 additions and 234 deletions
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5
tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
View file

@ -25,12 +25,9 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
static int pm_tmr_ioport = 0;
/*helper function to safely read acpi pm timesource*/