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| author | Vitaly Andrianov <vitalya@ti.com> | 2012-05-14 19:49:56 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-05-21 15:09:40 +0200 |
| commit | 61f6c7a47a2f84b7ba4b65240ffe9247df772b06 (patch) | |
| tree | aaeadf6490c61a541f83c86374e87a69384b2ca5 /arch/arm/mm | |
| parent | cma: fix migration mode (diff) | |
| download | linux-61f6c7a47a2f84b7ba4b65240ffe9247df772b06.tar.xz linux-61f6c7a47a2f84b7ba4b65240ffe9247df772b06.zip | |
ARM: dma-mapping: use PMD size for section unmap
The dma_contiguous_remap() function clears existing section maps using
the wrong size (PGDIR_SIZE instead of PMD_SIZE). This is a bug which
does not affect non-LPAE systems, where PGDIR_SIZE and PMD_SIZE are the same.
On LPAE systems, however, this bug causes the kernel to hang at this point.
This fix has been tested on both LPAE and non-LPAE kernel builds.
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'arch/arm/mm')
| -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 302f5bfb17f4..153f5559406a 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -295,7 +295,7 @@ void __init dma_contiguous_remap(void) * Clear previous low-memory mapping */ for (addr = __phys_to_virt(start); addr < __phys_to_virt(end); - addr += PGDIR_SIZE) + addr += PMD_SIZE) pmd_clear(pmd_off_k(addr)); iotable_init(&map, 1); |