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authorPhilippe De Muyter <phdm@macqel.be>2009-12-06 20:28:41 +0100
committerGeert Uytterhoeven <geert@linux-m68k.org>2010-02-27 18:27:13 +0100
commit88cb773c5f8e45e48f3a89480610448974337cb0 (patch)
tree0dbb615f3eebace13263455c7117e9a665749793
parent145452649d035e4e5152f6c4e6798c41960cad3e (diff)
m68k: Allow ioremapping top of memory
The test in __ioremap to reject memory ranges crossing the 0 boundary rejects also memory ranges ending at the end of the memory. Fix that. Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
-rw-r--r--arch/m68k/mm/kmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c
index df620ac2a29..cf93cdd515c 100644
--- a/arch/m68k/mm/kmap.c
+++ b/arch/m68k/mm/kmap.c
@@ -116,7 +116,7 @@ void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cachefla
/*
* Don't allow mappings that wrap..
*/
- if (!size || size > physaddr + size)
+ if (!size || physaddr > (unsigned long)(-size))
return NULL;
#ifdef CONFIG_AMIGA