[PATCH] m68k: fix __iounmap for 030
Ignore empty pmd entry during iomap (these are the holes between the
mappings).
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c
index 85ad19a..43ffab0 100644
--- a/arch/m68k/mm/kmap.c
+++ b/arch/m68k/mm/kmap.c
@@ -259,13 +259,15 @@
if (CPU_IS_020_OR_030) {
int pmd_off = (virtaddr/PTRTREESIZE) & 15;
+ int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK;
- if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) {
+ if (pmd_type == _PAGE_PRESENT) {
pmd_dir->pmd[pmd_off] = 0;
virtaddr += PTRTREESIZE;
size -= PTRTREESIZE;
continue;
- }
+ } else if (pmd_type == 0)
+ continue;
}
if (pmd_bad(*pmd_dir)) {