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[PATCH] AVR32: Don't try to iounmap P2 segment addresses

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While ioremap() will happily map a physical address through the
P2 (uncached) segment when appropriate, iounmap() doesn't know how
to handle those mappings.

This patch makes iounmap() do the right thing, i.e. nothing, for
such mappings.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Haavard Skinnemoen 2006-10-24 10:12:41 +02:00 committed by Linus Torvalds
parent 6ea850b5eb
commit bee8ce809f
1 changed files with 2 additions and 0 deletions
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2
arch/avr32/mm/ioremap.c
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@ -77,6 +77,8 @@ void __iounmap(void __iomem *addr)
if ((unsigned long)addr >= P4SEG)
return;
if (PXSEG(addr) == P2SEG)
return;
p = remove_vm_area((void *)(PAGE_MASK & (unsigned long __force)addr));
if (unlikely(!p)) {