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| author | Paul Mundt <lethal@linux-sh.org> | 2009-08-04 08:57:44 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-04 08:57:44 +0200 |
| commit | 700487c158163f14e6ff10de770b565c1c993c69 (patch) | |
| tree | fb86dee477c2903e975527461070638b03f85970 /arch/sh/mm | |
| parent | sh: Handle a NULL vma in __update_tlb() for the fast-path. (diff) | |
| download | linux-700487c158163f14e6ff10de770b565c1c993c69.tar.xz linux-700487c158163f14e6ff10de770b565c1c993c69.zip | |
sh: Add a PG_dcache_dirty sanity check in kmap_coherent().
This plugs in a BUG_ON() in kmap_coherent() for PG_dcache_dirty pages
to catch when things go horribly wrong. Copied from the MIPS
implementation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm')
| -rw-r--r-- | arch/sh/mm/pg-mmu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/sh/mm/pg-mmu.c b/arch/sh/mm/pg-mmu.c index 8602f68af4c8..32351206edd3 100644 --- a/arch/sh/mm/pg-mmu.c +++ b/arch/sh/mm/pg-mmu.c @@ -37,6 +37,8 @@ static inline void *kmap_coherent(struct page *page, unsigned long addr) unsigned long vaddr, flags; pte_t pte; + BUG_ON(test_bit(PG_dcache_dirty, &page->flags)); + inc_preempt_count(); idx = (addr & current_cpu_data.dcache.alias_mask) >> PAGE_SHIFT; |