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authorJoe Schultz <jschultz@xes-inc.com>2014-04-03 14:48:16 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-04-16 14:08:37 -0700
commit226572b110ab6083cb8c1d6afb191166b4178179 (patch)
tree1badb68060b9d5fa5a5d219f4dc7d9009c5660c3 /drivers/vme
parent098ced8fefe4a4e4240fa47b1ed9b00d65b6cd21 (diff)
downloadop-kernel-dev-226572b110ab6083cb8c1d6afb191166b4178179.zip
op-kernel-dev-226572b110ab6083cb8c1d6afb191166b4178179.tar.gz
vme_tsi148: Fix PCI address mapping assumption
Previously, tsi148_master_set() assumed the address contained in its PCI bus resource represented the actual PCI bus address. This is a fine assumption on some platforms. However, on platforms that don't use a 1:1 (CPU:PCI) mapping this results in the tsi148 driver configuring an invalid master window translation. This patch updates the vme_tsi148 driver to first convert the address contained in the PCI bus resource into a PCI bus address before using it. [asierra: account for pcibios_resource_to_bus() prototype change] Signed-off-by: Joe Schultz <jschultz@xes-inc.com> Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/vme')
-rw-r--r--drivers/vme/bridges/vme_tsi148.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/vme/bridges/vme_tsi148.c b/drivers/vme/bridges/vme_tsi148.c
index 6b03be7..e64e420 100644
--- a/drivers/vme/bridges/vme_tsi148.c
+++ b/drivers/vme/bridges/vme_tsi148.c
@@ -910,11 +910,15 @@ static int tsi148_master_set(struct vme_master_resource *image, int enabled,
unsigned long long pci_bound, vme_offset, pci_base;
struct vme_bridge *tsi148_bridge;
struct tsi148_driver *bridge;
+ struct pci_bus_region region;
+ struct pci_dev *pdev;
tsi148_bridge = image->parent;
bridge = tsi148_bridge->driver_priv;
+ pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
+
/* Verify input data */
if (vme_base & 0xFFFF) {
dev_err(tsi148_bridge->parent, "Invalid VME Window "
@@ -949,7 +953,9 @@ static int tsi148_master_set(struct vme_master_resource *image, int enabled,
pci_bound = 0;
vme_offset = 0;
} else {
- pci_base = (unsigned long long)image->bus_resource.start;
+ pcibios_resource_to_bus(pdev->bus, &region,
+ &image->bus_resource);
+ pci_base = region.start;
/*
* Bound address is a valid address for the window, adjust
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