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Date: Thu, 24 Mar 2016 09:41:02 +0800 From: Lv Zheng <lv.zheng@...el.com> To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Len Brown <len.brown@...el.com> Cc: Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>, <linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org Subject: [PATCH 22/30] Utilities: Fix missing parentheses in ACPI_GET_BITS()/ACPI_SET_BITS() 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@...el.com> --- drivers/acpi/acpica/acmacros.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index b461f55..73f6653 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -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 -- 1.7.10
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