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Utilities: Fix missing parentheses in ACPI_GET_BITS()/ACPI_SET_BITS()

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Some compilers require parentheses to be enforced in the macro definition,
so that the macro caller side can be simpler.

This patch fixes this kind of macro issue in
ACPI_SET_BITS()/ACPI_GET_BITS(). Lv Zheng.

Link: https://bugs.acpica.org/show_bug.cgi?id=1268
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lv Zheng 2016-03-24 09:41:02 +08:00 committed by Rafael J. Wysocki
parent a8d1e1c063
commit 0461f34e16
1 changed files with 2 additions and 2 deletions
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4
drivers/acpi/acpica/acmacros.h
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@ -287,10 +287,10 @@
/* Generic bitfield macros and masks */
#define ACPI_GET_BITS(source_ptr, position, mask) \
((*source_ptr >> position) & mask)
((*(source_ptr) >> (position)) & (mask))
#define ACPI_SET_BITS(target_ptr, position, mask, value) \
(*target_ptr |= ((value & mask) << position))
(*(target_ptr) |= (((value) & (mask)) << (position)))
#define ACPI_1BIT_MASK 0x00000001
#define ACPI_2BIT_MASK 0x00000003