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authorBob Moore <robert.moore@intel.com>2014-02-26 06:28:32 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-27 03:45:59 +0400
commit4ac4c5fad8a320f75cb84543403fb8bae5ad2254 (patch)
tree93b6c6a9dbc086412a1c2603cd5b47cc4d322e1f /drivers/acpi/acpica/acstruct.h
parent4dde507fc1984435f28862ddd1beb90822aa116c (diff)
downloadlinux-4ac4c5fad8a320f75cb84543403fb8bae5ad2254.tar.xz
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/acstruct.h')
-rw-r--r--drivers/acpi/acpica/acstruct.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
index 5d2989a1b68c..5a3fa0ddc1bc 100644
--- a/drivers/acpi/acpica/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
@@ -44,6 +44,8 @@
#ifndef __ACSTRUCT_H__
#define __ACSTRUCT_H__
+#pragma pack(push) /* Set default struct packing */
+
/* acpisrc:struct_defs -- for acpisrc conversion */
/*****************************************************************************
@@ -241,4 +243,6 @@ struct acpi_walk_info {
#define ACPI_DISPLAY_SHORT (u8) 2
+#pragma pack(pop) /* Restore original struct packing */
+
#endif