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sparc: PCI: Fix incorrect address calculation of PCI Bridge windows on Simba-bridges 

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 01f94c4a6c
("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 01f94c4a6c.

Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
oftedal 2013-10-18 22:28:29 +02:00 committed by David S. Miller
parent a7b9403f0e
commit 557fc5873e
1 changed files with 2 additions and 2 deletions
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4
arch/sparc/kernel/pci.c
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@ -398,8 +398,8 @@ static void apb_fake_ranges(struct pci_dev *dev,
apb_calc_first_last(map, &first, &last); apb_calc_first_last(map, &first, &last);
res = bus->resource[1]; res = bus->resource[1];
res->flags = IORESOURCE_MEM; res->flags = IORESOURCE_MEM;
region.start = (first << 21); region.start = (first << 29);
region.end = (last << 21) + ((1 << 21) - 1); region.end = (last << 29) + ((1 << 29) - 1);
pcibios_bus_to_resource(dev, res, &region); pcibios_bus_to_resource(dev, res, &region);
} }