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| author | Bob Moore <robert.moore@intel.com> | 2014-02-26 10:28:32 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-27 00:45:59 +0100 |
| commit | 4ac4c5fad8a320f75cb84543403fb8bae5ad2254 (patch) | |
| tree | 93b6c6a9dbc086412a1c2603cd5b47cc4d322e1f /drivers/acpi/acpica/acmacros.h | |
| parent | 4dde507fc1984435f28862ddd1beb90822aa116c (diff) | |
| download | linux-4ac4c5fad8a320f75cb84543403fb8bae5ad2254.tar.bz2 | |
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/acmacros.h')
| -rw-r--r-- | drivers/acpi/acpica/acmacros.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 4bceb11c7380..9b0ce226bf5d 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -44,6 +44,8 @@ #ifndef __ACMACROS_H__ #define __ACMACROS_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Extract data using a pointer. Any more than a byte and we * get into potential aligment issues -- see the STORE macros below. @@ -427,4 +429,6 @@ #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7')) +#pragma pack(pop) /* Restore original struct packing */ + #endif /* ACMACROS_H */ |