diff options
| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2008-05-10 20:05:31 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-05-17 21:55:14 (GMT) |
| commit | b3a8b751c1c2997653c6bf2b5d10467c39f3cc6e (patch) | |
| tree | 3b41e1ba606f9f1fb1aa08d4c66b873c7443fb94 /arch/arm | |
| parent | db2c4392907524fa376ffbd04f5781d6394e2666 (diff) | |
| download | linux-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')
| -rw-r--r-- | arch/arm/mm/proc-arm925.S | 2 | ||||
| -rw-r--r-- | arch/arm/mm/proc-arm926.S | 2 | ||||
| -rw-r--r-- | arch/arm/mm/proc-arm940.S | 2 | ||||
| -rw-r--r-- | arch/arm/mm/proc-arm946.S | 2 |
4 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S index 065087a..d045812 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 diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S index 997db84..4cd3316 100644 --- a/arch/arm/mm/proc-arm926.S +++ b/arch/arm/mm/proc-arm926.S @@ -295,7 +295,7 @@ ENTRY(arm926_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 diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S index 44ead90..1a3d63d 100644 --- a/arch/arm/mm/proc-arm940.S +++ b/arch/arm/mm/proc-arm940.S @@ -222,7 +222,7 @@ ENTRY(arm940_dma_flush_range) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH mcr p15, 0, r3, c7, c14, 2 @ clean/flush D entry #else - mcr p15, 0, r3, c7, c10, 2 @ clean D entry + mcr p15, 0, r3, c7, c6, 2 @ invalidate D entry #endif subs r3, r3, #1 << 26 bcs 2b @ entries 63 to 0 diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S index 2218b0c..82d579a 100644 --- a/arch/arm/mm/proc-arm946.S +++ b/arch/arm/mm/proc-arm946.S @@ -265,7 +265,7 @@ ENTRY(arm946_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 |