* [PATCH] m68k allow ioremapping top of memory
@ 2009-10-22 13:54 Philippe De Muyter
0 siblings, 0 replies; only message in thread
From: Philippe De Muyter @ 2009-10-22 13:54 UTC (permalink / raw)
To: linux-kernel, linux-m68k
Hi all,
The test in __ioremap to reject memory ranges crossing the 0 boundary
rejects also memory ranges at the end of the memory. Fix that.
Signed-off-by: Philippe De Muyter <phdm@macqel.be>
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c
--- a/arch/m68k/mm/kmap.c
+++ b/arch/m68k/mm/kmap.c
@@ -116,7 +115,7 @@ void __iomem *__ioremap(unsigned long ph
/*
* Don't allow mappings that wrap..
*/
- if (!size || size > physaddr + size)
+ if (!size || physaddr > (unsigned long)(-size))
return NULL;
#ifdef CONFIG_AMIGA
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2009-10-22 13:54 [PATCH] m68k allow ioremapping top of memory Philippe De Muyter
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