Commit bee8ce80 authored Oct 24, 2006 by Haavard Skinnemoen Committed by Linus Torvalds Oct 25, 2006

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



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>

parent 6ea850b5

arch/avr32/mm/ioremap.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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)) {

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