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authorBob Moore <robert.moore@intel.com>2014-02-26 10:28:32 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-27 00:45:59 +0100
commit4ac4c5fad8a320f75cb84543403fb8bae5ad2254 (patch)
tree93b6c6a9dbc086412a1c2603cd5b47cc4d322e1f /drivers/acpi/acpica/amlcode.h
parent4dde507fc1984435f28862ddd1beb90822aa116c (diff)
downloadop-kernel-dev-4ac4c5fad8a320f75cb84543403fb8bae5ad2254.zip
op-kernel-dev-4ac4c5fad8a320f75cb84543403fb8bae5ad2254.tar.gz
ACPICA: Headers: Deploy #pragma pack (push) and (pop).
Use push and pop to both guarantee that the correct alignment is used, and to restore the alignment to whatever it was before the header was included. It is reported that the #pragma pack(push/pop) directives are not supported by the specific GCCs, but this patch still doesn't affect kernel build as there are already #pragma pack([1]) directives used in the old ACPICA headers, which means there shouldn't be GCCs that are currently used to compile the ACPI kernels do not support #pragma pack() directives. References: https://bugs.acpica.org/show_bug.cgi?id=1058 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/amlcode.h')
-rw-r--r--drivers/acpi/acpica/amlcode.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h
index 5908cce..2db2710 100644
--- a/drivers/acpi/acpica/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
@@ -46,6 +46,8 @@
#ifndef __AMLCODE_H__
#define __AMLCODE_H__
+#pragma pack(push) /* Set default struct packing */
+
/* primary opcodes */
#define AML_NULL_CHAR (u16) 0x00
@@ -484,4 +486,6 @@ typedef enum {
#define AML_METHOD_SERIALIZED 0x08
#define AML_METHOD_SYNC_LEVEL 0xF0
+#pragma pack(pop) /* Restore original struct packing */
+
#endif /* __AMLCODE_H__ */
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