From b438299c93753620877d3a848c0f82757d211b31 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 16 Apr 2007 22:53:16 -0700 Subject: fix bogon in /dev/mem mmap'ing on nommu While digging through my MAP_FIXED changes, I found that rather obvious bug in /dev/mem mmap implementation for nommu archs. get_unmapped_area() is expected to return an address, not a pfn. Signed-off-by: Benjamin Herrenschmidt Acked-By: David Howells Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- drivers/char/mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/mem.c b/drivers/char/mem.c index f5c160caf9f4..5f066963f171 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -248,7 +248,7 @@ static unsigned long get_unmapped_area_mem(struct file *file, { if (!valid_mmap_phys_addr_range(pgoff, len)) return (unsigned long) -EINVAL; - return pgoff; + return pgoff << PAGE_SHIFT; } /* can't do an in-place private mapping if there's no MMU */ -- cgit v1.2.3