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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 /include/acpi/acbuffer.h | |
| parent | 4dde507fc1984435f28862ddd1beb90822aa116c (diff) | |
| download | blackbird-obmc-linux-4ac4c5fad8a320f75cb84543403fb8bae5ad2254.tar.gz blackbird-obmc-linux-4ac4c5fad8a320f75cb84543403fb8bae5ad2254.zip | |
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/acbuffer.h')
| -rw-r--r-- | include/acpi/acbuffer.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/acpi/acbuffer.h b/include/acpi/acbuffer.h index 88cb477524a6..960c76fb69a1 100644 --- a/include/acpi/acbuffer.h +++ b/include/acpi/acbuffer.h @@ -44,6 +44,8 @@ #ifndef __ACBUFFER_H__ #define __ACBUFFER_H__ +#pragma pack(push) /* Set default struct packing */ + /* * Contains buffer structures for these predefined names: * _FDE, _GRT, _GTM, _PLD, _SRT @@ -232,4 +234,6 @@ struct acpi_pld_info { #define ACPI_PLD_GET_HORIZ_OFFSET(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK) #define ACPI_PLD_SET_HORIZ_OFFSET(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 128+16=144, Len 16 */ +#pragma pack(pop) /* Restore original struct packing */ + #endif /* ACBUFFER_H */ |
