[PATCH 3.16 118/328] PCI: mvebu: Fix I/O space end address calculation

Ben Hutchings
2018-12-09T22:11:08Z

From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

commit dfd0309fd7b30a5baffaf47b2fccb88b46d64d69 upstream.

pcie->realio.end should be the address of last byte of the area,
therefore using resource_size() of another resource is not correct, we
must substract 1 to get the address of the last byte.

Fixes: 11be65472a427 ("PCI: mvebu: Adapt to the new device tree layout")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/pci/host/pci-mvebu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -940,7 +940,7 @@ static int mvebu_pcie_probe(struct platf
pcie->realio.start = PCIBIOS_MIN_IO;
pcie->realio.end = min_t(resource_size_t,
IO_SPACE_LIMIT,
- resource_size(&pcie->io));
+ resource_size(&pcie->io) - 1);
} else
pcie->realio = pcie->io;