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authorWill Deacon <will.deacon@arm.com>2014-05-09 18:36:27 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-05-25 23:47:46 +0100
commit9581960a40ab0e281b695bf03744c8924ec3b5d0 (patch)
treeff48508723eef430b3afb1fe48f19945acb3ed00
parentcd000cf650cd43dc0dc37032cb4016985c9dda6c (diff)
downloadlinux-9581960a40ab0e281b695bf03744c8924ec3b5d0.tar.bz2
ARM: 8055/1: cacheflush: use -st dsb option for ensuring completion
dsb st can be used to ensure completion of pending cache maintenance operations, so use it for the v7 cache maintenance operations. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/include/asm/cacheflush.h2
-rw-r--r--arch/arm/mm/cache-v7.S12
-rw-r--r--arch/arm/mm/mmu.c2
3 files changed, 8 insertions, 8 deletions
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 8b8b61685a34..00af9fe435e6 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -212,7 +212,7 @@ extern void copy_to_user_page(struct vm_area_struct *, struct page *,
static inline void __flush_icache_all(void)
{
__flush_icache_preferred();
- dsb();
+ dsb(ishst);
}
/*
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S
index 778bcf88ee79..615c99e38ba1 100644
--- a/arch/arm/mm/cache-v7.S
+++ b/arch/arm/mm/cache-v7.S
@@ -59,7 +59,7 @@ ENTRY(v7_invalidate_l1)
bgt 2b
cmp r2, #0
bgt 1b
- dsb
+ dsb st
isb
mov pc, lr
ENDPROC(v7_invalidate_l1)
@@ -166,7 +166,7 @@ skip:
finished:
mov r10, #0 @ swith back to cache level 0
mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
- dsb
+ dsb st
isb
mov pc, lr
ENDPROC(v7_flush_dcache_all)
@@ -335,7 +335,7 @@ ENTRY(v7_flush_kern_dcache_area)
add r0, r0, r2
cmp r0, r1
blo 1b
- dsb
+ dsb st
mov pc, lr
ENDPROC(v7_flush_kern_dcache_area)
@@ -368,7 +368,7 @@ v7_dma_inv_range:
add r0, r0, r2
cmp r0, r1
blo 1b
- dsb
+ dsb st
mov pc, lr
ENDPROC(v7_dma_inv_range)
@@ -390,7 +390,7 @@ v7_dma_clean_range:
add r0, r0, r2
cmp r0, r1
blo 1b
- dsb
+ dsb st
mov pc, lr
ENDPROC(v7_dma_clean_range)
@@ -412,7 +412,7 @@ ENTRY(v7_dma_flush_range)
add r0, r0, r2
cmp r0, r1
blo 1b
- dsb
+ dsb st
mov pc, lr
ENDPROC(v7_dma_flush_range)
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 09c0a16165dc..a991ce2f18d4 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1465,7 +1465,7 @@ void __init early_paging_init(const struct machine_desc *mdesc,
* just complicate the code.
*/
flush_cache_louis();
- dsb();
+ dsb(ishst);
isb();
/* remap level 1 table */