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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 /include/acpi/actbl.h
parent4dde507fc1984435f28862ddd1beb90822aa116c (diff)
downloadlinux-sh-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 'include/acpi/actbl.h')
-rw-r--r--include/acpi/actbl.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h
index 3b30e36b53b5..b32a33f1c2df 100644
--- a/include/acpi/actbl.h
+++ b/include/acpi/actbl.h
@@ -44,6 +44,8 @@
#ifndef __ACTBL_H__
#define __ACTBL_H__
+#pragma pack(push) /* Set default struct packing */
+
/*******************************************************************************
*
* Fundamental ACPI tables
@@ -404,4 +406,6 @@ struct acpi_table_desc {
#define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control))
#define ACPI_FADT_V5_SIZE (u32) (sizeof (struct acpi_table_fadt))
+#pragma pack(pop) /* Restore original struct packing */
+
#endif /* __ACTBL_H__ */