diff options
author | Ingo Molnar <mingo@elte.hu> | 2010-08-12 21:38:56 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-08-12 21:39:04 +0200 |
commit | f46a6804135795f77d096ab0128f27531c7d051c (patch) | |
tree | 7cd33f69e3661327739ae4c96e5a8389e7fc912e /arch/blackfin/kernel/bfin_dma_5xx.c | |
parent | b3e84ffa21f916e3354a12a7f19169c9febe96d0 (diff) | |
parent | ad41a1e0cab07c5125456e8d38e5b1ab148d04aa (diff) |
Merge branch 'linus' into perf/urgent
Merge reason: Fix upstream breakage introduced by:
de5d9bf: Move list types from <linux/list.h> to <linux/types.h>.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/blackfin/kernel/bfin_dma_5xx.c')
-rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c index 26403d1c9e65..1e485dfdc9f2 100644 --- a/arch/blackfin/kernel/bfin_dma_5xx.c +++ b/arch/blackfin/kernel/bfin_dma_5xx.c @@ -450,7 +450,6 @@ void *dma_memcpy(void *pdst, const void *psrc, size_t size) { unsigned long dst = (unsigned long)pdst; unsigned long src = (unsigned long)psrc; - size_t bulk, rest; if (bfin_addr_dcacheable(src)) blackfin_dcache_flush_range(src, src + size); @@ -458,6 +457,22 @@ void *dma_memcpy(void *pdst, const void *psrc, size_t size) if (bfin_addr_dcacheable(dst)) blackfin_dcache_invalidate_range(dst, dst + size); + return dma_memcpy_nocache(pdst, psrc, size); +} +EXPORT_SYMBOL(dma_memcpy); + +/** + * dma_memcpy_nocache - DMA memcpy under mutex lock + * - No cache flush/invalidate + * + * Do not check arguments before starting the DMA memcpy. Break the transfer + * up into two pieces. The first transfer is in multiples of 64k and the + * second transfer is the piece smaller than 64k. + */ +void *dma_memcpy_nocache(void *pdst, const void *psrc, size_t size) +{ + size_t bulk, rest; + bulk = size & ~0xffff; rest = size - bulk; if (bulk) @@ -465,7 +480,7 @@ void *dma_memcpy(void *pdst, const void *psrc, size_t size) _dma_memcpy(pdst + bulk, psrc + bulk, rest); return pdst; } -EXPORT_SYMBOL(dma_memcpy); +EXPORT_SYMBOL(dma_memcpy_nocache); /** * safe_dma_memcpy - DMA memcpy w/argument checking |