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| author | Joe Schultz <jschultz@xes-inc.com> | 2014-04-03 14:48:16 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-16 14:08:37 -0700 |
| commit | 226572b110ab6083cb8c1d6afb191166b4178179 (patch) | |
| tree | 1badb68060b9d5fa5a5d219f4dc7d9009c5660c3 /drivers/vme | |
| parent | 098ced8fefe4a4e4240fa47b1ed9b00d65b6cd21 (diff) | |
| download | lwn-226572b110ab6083cb8c1d6afb191166b4178179.tar.gz lwn-226572b110ab6083cb8c1d6afb191166b4178179.zip | |
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.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/vme/bridges/vme_tsi148.c b/drivers/vme/bridges/vme_tsi148.c index 6b03be715005..e64e4208de2b 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, ®ion, + &image->bus_resource); + pci_base = region.start; /* * Bound address is a valid address for the window, adjust |