This is a note to let you know that I've just added the patch titled
sparc: PCI: Fix incorrect address calculation of PCI Bridge windows on Simba-bridges
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sparc-pci-fix-incorrect-address-calculation-of-pci-bridge-windows-on-simba-bridges.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 14 15:35:09 PDT 2014
From: oftedal <oftedal@xxxxxxxxx>
Date: Fri, 18 Oct 2013 22:28:29 +0200
Subject: sparc: PCI: Fix incorrect address calculation of PCI Bridge windows on Simba-bridges
From: oftedal <oftedal@xxxxxxxxx>
[ Upstream commit 557fc5873ef178c4b3e1e36a42db547ecdc43f9b ]
The SIMBA APB Bridges lacks the 'ranges' of-property describing the
PCI I/O and memory areas located beneath the bridge. Faking this
information has been performed by reading range registers in the
APB bridge, and calculating the corresponding areas.
In commit 01f94c4a6ced476ce69b895426fc29bfc48c69bd
("Fix sabre pci controllers with new probing scheme.") a bug was
introduced into this calculation, causing the PCI memory areas
to be calculated incorrectly: The shift size was set to be
identical for I/O and MEM ranges, which is incorrect.
This patch set the shift size of the MEM range back to the
value used before 01f94c4a6ced476ce69b895426fc29bfc48c69bd.
Signed-off-by: Kjetil Oftedal <oftedal@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/sparc/kernel/pci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -486,8 +486,8 @@ static void __devinit apb_fake_ranges(st
apb_calc_first_last(map, &first, &last);
res = bus->resource[1];
res->flags = IORESOURCE_MEM;
- region.start = (first << 21);
- region.end = (last << 21) + ((1 << 21) - 1);
+ region.start = (first << 29);
+ region.end = (last << 29) + ((1 << 29) - 1);
pcibios_bus_to_resource(dev, res, ®ion);
}
Patches currently in stable-queue which might be from oftedal@xxxxxxxxx are
queue-3.4/sparc-pci-fix-incorrect-address-calculation-of-pci-bridge-windows-on-simba-bridges.patch
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