Messages in this thread Patch in this message | | | From | Haavard Skinnemoen <> | Subject | [PATCH 3/8] AVR32: Don't try to iounmap P2 segment addresses | Date | Tue, 24 Oct 2006 10:12:41 +0200 |
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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> --- arch/avr32/mm/ioremap.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/avr32/mm/ioremap.c b/arch/avr32/mm/ioremap.c index 8cfec65..3437c82 100644 --- a/arch/avr32/mm/ioremap.c +++ b/arch/avr32/mm/ioremap.c @@ -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)) { -- 1.4.1.1 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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