bus: mvebu-mbus: Fix incorrect size for PCI aperture resources

reg[0] is the DT base, reg[1] is the DT length in bytes,
struct resource.end is the inclusive end address, so a -1 is required.

Tested on kirkwood.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 725c46162bbd..2ac754e18bcf 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -870,14 +870,14 @@ static void __init mvebu_mbus_get_pcie_resources(struct device_node *np,
         ret = of_property_read_u32_array(np, "pcie-mem-aperture", reg, ARRAY_SIZE(reg));
         if (!ret) {
                 mem->start = reg[0];
-                mem->end = mem->start + reg[1];
+                mem->end = mem->start + reg[1] - 1;
                 mem->flags = IORESOURCE_MEM;
         }
 
         ret = of_property_read_u32_array(np, "pcie-io-aperture", reg, ARRAY_SIZE(reg));
         if (!ret) {
                 io->start = reg[0];
-                io->end = io->start + reg[1];
+                io->end = io->start + reg[1] - 1;
                 io->flags = IORESOURCE_IO;
         }
 }