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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/acdispat.h
parent4dde507fc1984435f28862ddd1beb90822aa116c (diff)
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/acdispat.h')
-rw-r--r--drivers/acpi/acpica/acdispat.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h
index 5b472c43c31d..53b6dd679ffa 100644
--- a/drivers/acpi/acpica/acdispat.h
+++ b/drivers/acpi/acpica/acdispat.h
@@ -44,6 +44,8 @@
#ifndef _ACDISPAT_H_
#define _ACDISPAT_H_
+#pragma pack(push) /* Set default struct packing */
+
#define NAMEOF_LOCAL_NTE "__L0"
#define NAMEOF_ARG_NTE "__A0"
@@ -351,4 +353,6 @@ acpi_status
acpi_ds_result_push(union acpi_operand_object *object,
struct acpi_walk_state *walk_state);
+#pragma pack(pop) /* Restore original struct packing */
+
#endif /* _ACDISPAT_H_ */