diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2011-04-06 11:18:47 -0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-12 05:52:00 -0400 |
| commit | a904f5f9eb7a55baacb2f4c1423cac8a8eb78a3a (patch) | |
| tree | d3ada07264a900601f8e610f9270b5319a6631d4 /arch/arm/mach-realview | |
| parent | 2af68df02fe5ccd644f4312ba2401996f52faab3 (diff) | |
ARM: 6870/1: The mandatory barrier rmb() must be a dsb() in for device accesses
Since mandatory barriers may be used (explicitly or implicitly via readl
etc.) to ensure the ordering between Device and Normal memory accesses,
a DMB is not enough. This patch converts it to a DSB.
Cc: Colin Cross <ccross@android.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-realview')
| -rw-r--r-- | arch/arm/mach-realview/include/mach/barriers.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-realview/include/mach/barriers.h b/arch/arm/mach-realview/include/mach/barriers.h index 0c5d749d7b5f..9a732195aa1c 100644 --- a/arch/arm/mach-realview/include/mach/barriers.h +++ b/arch/arm/mach-realview/include/mach/barriers.h | |||
| @@ -4,5 +4,5 @@ | |||
| 4 | * operation to deadlock the system. | 4 | * operation to deadlock the system. |
| 5 | */ | 5 | */ |
| 6 | #define mb() dsb() | 6 | #define mb() dsb() |
| 7 | #define rmb() dmb() | 7 | #define rmb() dsb() |
| 8 | #define wmb() mb() | 8 | #define wmb() mb() |