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authorKevin Hao <haokexin@gmail.com>2013-05-16 20:58:41 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-06-01 08:29:28 +1000
commit279838960484fa22d903086eea743a6b6700647d (patch)
tree6c34222df22bb0405a848830d1358590612d3199
parentf274ef8747d3be649bba8708696fb31cb00fa75a (diff)
downloadlinux-279838960484fa22d903086eea743a6b6700647d.tar.gz
powerpc/pci: Remove the stale comments of pci_process_bridge_OF_ranges
These comments already don't apply to the current code. So just remove them. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/kernel/pci-common.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index e9acf50dd5b..8acd7c97083 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -657,15 +657,6 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
* ranges. However, some machines (thanks Apple !) tend to split their
* space into lots of small contiguous ranges. So we have to coalesce.
*
- * - We can only cope with all memory ranges having the same offset
- * between CPU addresses and PCI addresses. Unfortunately, some bridges
- * are setup for a large 1:1 mapping along with a small "window" which
- * maps PCI address 0 to some arbitrary high address of the CPU space in
- * order to give access to the ISA memory hole.
- * The way out of here that I've chosen for now is to always set the
- * offset based on the first resource found, then override it if we
- * have a different offset and the previous was set by an ISA hole.
- *
* - Some busses have IO space not starting at 0, which causes trouble with
* the way we do our IO resource renumbering. The code somewhat deals with
* it for 64 bits but I would expect problems on 32 bits.