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| author | Keir Fraser <Keir.Fraser@cl.cam.ac.uk> | 2005-09-23 04:43:59 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-23 05:17:34 (GMT) |
| commit | 609725f87709724218047a1049913ed233f79d3c (patch) | |
| tree | 7ccc4b12808b4de7d248ba7a722637f244155f26 /Documentation/preempt-locking.txt | |
| parent | 7243cc05bafdda4c4de77cba00cf87666bd237f7 (diff) | |
| download | linux-609725f87709724218047a1049913ed233f79d3c.tar.xz | |
[PATCH] Fix mmap() of /dev/hpet
The address passed to io_remap_pfn_range() in hpet_mmap() does not need to
be converted using __pa(): it is already a physical address. This bug was
found and the patch suggested by Clay Harris.
I introduced this particular bug when making io_remap_pfn_range changes a
few months ago. In fact mmap()ing /dev/hpet has *never* previously worked:
before my changes __pa() was being executed on an ioremap()ed virtual
address, which is also invalid.
Signed-off-by: Keir Fraser <keir@xensource.com>
Cc: Robert Picco <Robert.Picco@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/preempt-locking.txt')
0 files changed, 0 insertions, 0 deletions