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| author | Matt Fleming <matt@console-pimps.org> | 2010-04-25 17:29:07 +0100 |
|---|---|---|
| committer | Matt Fleming <matt@console-pimps.org> | 2010-04-25 20:44:23 +0100 |
| commit | c7b03fa0bdc04e00bfbdc4cc69da144b11108f37 (patch) | |
| tree | 1dab19213c06e87818faef6badd7eb101877be2e /arch/sh/mm/pmb.c | |
| parent | 9c3d936352fefaadec57bafda1fe3807890cbf2c (diff) | |
| download | lwn-c7b03fa0bdc04e00bfbdc4cc69da144b11108f37.tar.gz lwn-c7b03fa0bdc04e00bfbdc4cc69da144b11108f37.zip | |
sh: Do not try merging two 128MB PMB mappings
There is a logic error in pmb_merge() that means we will incorrectly try
to merge two 128MB PMB mappings into one mapping. However, 256MB isn't a
valid PMB map size and pmb_merge() will actually drop the second 128MB
mapping.
This patch allows my SDK7786 board to boot when configured with
CONFIG_MEMORY_SIZE=0x10000000.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/mm/pmb.c')
| -rw-r--r-- | arch/sh/mm/pmb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c index 3cc21933063b..c0fdc217ece5 100644 --- a/arch/sh/mm/pmb.c +++ b/arch/sh/mm/pmb.c @@ -681,7 +681,7 @@ static void __init pmb_merge(struct pmb_entry *head) /* * The merged page size must be valid. */ - if (!pmb_size_valid(newsize)) + if (!depth || !pmb_size_valid(newsize)) return; head->flags &= ~PMB_SZ_MASK; |