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| author | Chris Brand <cbrand@broadcom.com> | 2012-08-07 14:01:14 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-08-09 07:46:07 +0200 |
| commit | 39f78e70567a07a6fc0d7a4ca9e3331e44dd400d (patch) | |
| tree | fa912fcd3cd9cb6fe0af7b9d413b3ff38fb595eb | |
| parent | 0d7614f09c1ebdbaa1599a5aba7593f147bf96ee (diff) | |
| download | linux-39f78e70567a07a6fc0d7a4ca9e3331e44dd400d.tar.gz linux-39f78e70567a07a6fc0d7a4ca9e3331e44dd400d.tar.bz2 linux-39f78e70567a07a6fc0d7a4ca9e3331e44dd400d.zip | |
ARM: mm: fix MMU mapping of CMA regions
Fix dma_contiguous_remap() so that it continues through all the
regions, even after encountering one that is outside lowmem.
Without this change, if you have two CMA regions, the first outside
lowmem and the seocnd inside lowmem, only the second one will get
set up in the MMU. Data written to that region then doesn't get
automatically flushed from the cache into memory.
Signed-off-by: Chris Brand <cbrand@broadcom.com>
[extended patch subject with 'fix' word]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index c2cdf6500f75..334dd79ad5e6 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -358,7 +358,7 @@ void __init dma_contiguous_remap(void) if (end > arm_lowmem_limit) end = arm_lowmem_limit; if (start >= end) - return; + continue; map.pfn = __phys_to_pfn(start); map.virtual = __phys_to_virt(start); |