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authorAneesh V <aneesh@ti.com>2011-08-11 04:35:44 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2011-09-04 11:36:16 +0200
commit882f80b993f3719cce5bfa7f1bca9b1b23062b5f (patch)
treeba83eab86729a1871261d10512178ccc1d2c9a65 /arch/arm
parent13d4f9bd7477b3b409f3e267b3b3d6fed5bd3e30 (diff)
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armv7: stronger barrier for cache-maintenance operations
set-way operations need a DSB after them to ensure the operation is complete. DMB may not be enough. Use DSB after all operations instead of DMB. Signed-off-by: Aneesh V <aneesh@ti.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/cpu/armv7/cache_v7.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv7/cache_v7.c b/arch/arm/cpu/armv7/cache_v7.c
index 3e1e1bf..665f025 100644
--- a/arch/arm/cpu/armv7/cache_v7.c
+++ b/arch/arm/cpu/armv7/cache_v7.c
@@ -81,8 +81,8 @@ static void v7_inval_dcache_level_setway(u32 level, u32 num_sets,
: : "r" (setway));
}
}
- /* DMB to make sure the operation is complete */
- CP15DMB;
+ /* DSB to make sure the operation is complete */
+ CP15DSB;
}
static void v7_clean_inval_dcache_level_setway(u32 level, u32 num_sets,
@@ -108,8 +108,8 @@ static void v7_clean_inval_dcache_level_setway(u32 level, u32 num_sets,
: : "r" (setway));
}
}
- /* DMB to make sure the operation is complete */
- CP15DMB;
+ /* DSB to make sure the operation is complete */
+ CP15DSB;
}
static void v7_maint_dcache_level_setway(u32 level, u32 operation)
@@ -227,8 +227,8 @@ static void v7_dcache_maint_range(u32 start, u32 stop, u32 range_op)
break;
}
- /* DMB to make sure the operation is complete */
- CP15DMB;
+ /* DSB to make sure the operation is complete */
+ CP15DSB;
}
/* Invalidate TLB */