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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 /drivers/xen
parent6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff)
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 'drivers/xen')
-rw-r--r--drivers/xen/xen-acpi-cpuhotplug.c3
-rw-r--r--drivers/xen/xen-acpi-memhotplug.c1
-rw-r--r--drivers/xen/xen-acpi-pad.c5
-rw-r--r--drivers/xen/xen-acpi-processor.c4
4 files changed, 3 insertions, 10 deletions
diff --git a/drivers/xen/xen-acpi-cpuhotplug.c b/drivers/xen/xen-acpi-cpuhotplug.c
index 8dae6c13063a..cd5bb0a507a2 100644
--- a/drivers/xen/xen-acpi-cpuhotplug.c
+++ b/drivers/xen/xen-acpi-cpuhotplug.c
@@ -24,10 +24,7 @@
#include <linux/cpu.h>
#include <linux/acpi.h>
#include <linux/uaccess.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
-
#include <xen/acpi.h>
#include <xen/interface/platform.h>
#include <asm/xen/hypercall.h>
diff --git a/drivers/xen/xen-acpi-memhotplug.c b/drivers/xen/xen-acpi-memhotplug.c
index 9083f1e474f8..f2872a1bb096 100644
--- a/drivers/xen/xen-acpi-memhotplug.c
+++ b/drivers/xen/xen-acpi-memhotplug.c
@@ -22,7 +22,6 @@
#include <linux/init.h>
#include <linux/types.h>
#include <linux/acpi.h>
-#include <acpi/acpi_drivers.h>
#include <xen/acpi.h>
#include <xen/interface/platform.h>
#include <asm/xen/hypercall.h>
diff --git a/drivers/xen/xen-acpi-pad.c b/drivers/xen/xen-acpi-pad.c
index 59708fdd068b..40c4bc06b5fa 100644
--- a/drivers/xen/xen-acpi-pad.c
+++ b/drivers/xen/xen-acpi-pad.c
@@ -18,11 +18,10 @@
#include <linux/kernel.h>
#include <linux/types.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
-#include <asm/xen/hypercall.h>
+#include <linux/acpi.h>
#include <xen/interface/version.h>
#include <xen/xen-ops.h>
+#include <asm/xen/hypercall.h>
#define ACPI_PROCESSOR_AGGREGATOR_CLASS "acpi_pad"
#define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator"
diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c
index 13bc6c31c060..7231859119f1 100644
--- a/drivers/xen/xen-acpi-processor.c
+++ b/drivers/xen/xen-acpi-processor.c
@@ -28,10 +28,8 @@
#include <linux/module.h>
#include <linux/types.h>
#include <linux/syscore_ops.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
+#include <linux/acpi.h>
#include <acpi/processor.h>
-
#include <xen/xen.h>
#include <xen/interface/platform.h>
#include <asm/xen/hypercall.h>