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authorLennert Buytenhek <buytenh@wantstofly.org>2008-05-11 00:05:31 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-05-18 01:55:14 +0400
commitb3a8b751c1c2997653c6bf2b5d10467c39f3cc6e (patch)
tree3b41e1ba606f9f1fb1aa08d4c66b873c7443fb94 /arch/arm/mm/proc-arm925.S
parentdb2c4392907524fa376ffbd04f5781d6394e2666 (diff)
downloadlinux-b3a8b751c1c2997653c6bf2b5d10467c39f3cc6e.tar.xz
[ARM] 5034/1: fix arm{925,926,940,946} dma_flush_range() in WT mode
The CPU's dma_flush_range() operation needs to clean+invalidate the given memory area if the cache is in writeback mode, or do just the invalidate part if the cache is in writethrough mode, but the current proc-arm{925,926,940,946} (incorrectly) do a cache clean in the latter case. This patch fixes that. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/proc-arm925.S')
-rw-r--r--arch/arm/mm/proc-arm925.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S
index 065087afb772..d045812f3399 100644
--- a/arch/arm/mm/proc-arm925.S
+++ b/arch/arm/mm/proc-arm925.S
@@ -332,7 +332,7 @@ ENTRY(arm925_dma_flush_range)
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
#else
- mcr p15, 0, r0, c7, c10, 1 @ clean D entry
+ mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
#endif
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1