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authorLv Zheng <lv.zheng@intel.com>2013-12-03 08:49:16 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-12-07 01:03:14 +0100
commit8b48463f89429af408ff695244dc627e1acff4f7 (patch)
tree7870e8c2e8ed42df90ba79a809f1ec57656fedaf /tools/power/cpupower/debug
parentLinux 3.13-rc1 (diff)
downloadlinux-dev-8b48463f89429af408ff695244dc627e1acff4f7.tar.xz
linux-dev-8b48463f89429af408ff695244dc627e1acff4f7.zip
ACPI: Clean up inclusions of ACPI header files
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 <lv.zheng@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Tony Luck <tony.luck@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff) Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/power/cpupower/debug')
-rw-r--r--tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c b/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
index 66cace601e57..0f10b81e3322 100644
--- a/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
+++ b/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
@@ -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*/