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[MIPS] Fix buggy use of kmap_coherent.

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Assuming the call of kmap_coherent in local_r4k_flush_cache_page doesn't
need fixing this was skipped in fcae549295bcae801ac48fc1c2030ab8cc487020.
Turns out it needed the same change after all.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2008-06-14 22:22:08 +01:00
parent 0c3bd83b09
commit c9c5023d83
1 changed files with 5 additions and 2 deletions
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7
arch/mips/mm/c-r4k.c
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@ -446,6 +446,7 @@ static inline void local_r4k_flush_cache_page(void *args)
struct page *page = pfn_to_page(fcp_args->pfn);
int exec = vma->vm_flags & VM_EXEC;
struct mm_struct *mm = vma->vm_mm;
int map_coherent = 0;
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
@ -479,7 +480,9 @@ static inline void local_r4k_flush_cache_page(void *args)
* Use kmap_coherent or kmap_atomic to do flushes for
* another ASID than the current one.
*/
if (cpu_has_dc_aliases)
map_coherent = (cpu_has_dc_aliases &&
page_mapped(page) && !Page_dcache_dirty(page));
if (map_coherent)
vaddr = kmap_coherent(page, addr);
else
vaddr = kmap_atomic(page, KM_USER0);
@ -502,7 +505,7 @@ static inline void local_r4k_flush_cache_page(void *args)
}
if (vaddr) {
if (cpu_has_dc_aliases)
if (map_coherent)
kunmap_coherent();
else
kunmap_atomic(vaddr, KM_USER0);