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ARM: dma-mapping: use PMD size for section unmap

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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>
This commit is contained in:
Vitaly Andrianov 2012-05-14 13:49:56 -04:00 committed by Marek Szyprowski
parent 58f42fd541
commit 61f6c7a47a
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/dma-mapping.c
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@ -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);