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ARM: 5747/1: Fix the start_pg value in free_memmap()

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If sparsemem is enabled, the start_pfn passed to the free_memmap()
function corresponds to an area of memory not known to the kernel and
pfn_to_page returns a wrong value. The (start_pfn - 1), however, is
known to the kernel.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Catalin Marinas 2009-10-06 17:57:22 +01:00 committed by Russell King
parent 32cfb1b16f
commit 3257f43d92
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/init.c
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@ -483,7 +483,7 @@ free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
/*
* Convert start_pfn/end_pfn to a struct page pointer.
*/
start_pg = pfn_to_page(start_pfn);
start_pg = pfn_to_page(start_pfn - 1) + 1;
end_pg = pfn_to_page(end_pfn);
/*