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 <[EMAIL PROTECTED]>
---
I suppose that can go in anytime, and probably in stable too, Dave ?
Index: linux-cell/drivers/char/mem.c
===================================================================
--- linux-cell.orig/drivers/char/mem.c 2007-02-12 10:36:14.000000000 +1100
+++ linux-cell/drivers/char/mem.c 2007-04-12 11:38:44.000000000 +1000
@@ -248,7 +248,7 @@ static unsigned long get_unmapped_area_m
{
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 */
-
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