Commit 0d6d82b6 authored Nov 07, 2005 by Paul Mundt Committed by Linus Torvalds Nov 07, 2005

[PATCH] sh: Use pfn_valid() for lazy dcache write-back on SH7705



SH7705 in extended cache mode has some left-over VALID_PAGE() cruft that it
checks when doing lazy dcache write-back.  This has been gone for some time
(the last bits were in the discontig code, which should now also be gone --
this also fixes up a build error in the non-discontig case).

pfn_valid() gives the desired behaviour, so we switch to that.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 65463b73

arch/sh/mm/tlb-sh3.c

+12 −7

Original line number	Diff line number	Diff line
		@@ -40,13 +40,18 @@ void update_mmu_cache(struct vm_area_struct * vma,
		return;

		#if defined(CONFIG_SH7705_CACHE_32KB)
		struct page *page;
		page = pte_page(pte);
		if (VALID_PAGE(page) && !test_bit(PG_mapped, &page->flags)) {
		{
		struct page *page = pte_page(pte);
		unsigned long pfn = pte_pfn(pte);

		if (pfn_valid(pfn) && !test_bit(PG_mapped, &page->flags)) {
		unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
		__flush_wback_region((void *)P1SEGADDR(phys), PAGE_SIZE);

		__flush_wback_region((void *)P1SEGADDR(phys),
		PAGE_SIZE);
		__set_bit(PG_mapped, &page->flags);
		}
		}
		#endif

		local_irq_save(flags);