diff options
Diffstat (limited to 'arch/m68k/mm/kmap.c')
| -rw-r--r-- | arch/m68k/mm/kmap.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c index df620ac2a296..69345849454b 100644 --- a/arch/m68k/mm/kmap.c +++ b/arch/m68k/mm/kmap.c @@ -99,8 +99,7 @@ static inline void free_io_area(void *addr) #endif /* - * Map some physical address range into the kernel address space. The - * code is copied and adapted from map_chunk(). + * Map some physical address range into the kernel address space. */ /* Rewritten by Andreas Schwab to remove all races. */ @@ -116,7 +115,7 @@ 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 |