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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-23 01:35:55 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-23 01:35:55 -0300 |
| commit | d26f4ddb48463e2ff798859505af1cc520e75685 (patch) | |
| tree | a1268534c14d9a7db61b4758ac72c33a3c7712bb /drivers/pci/setup-res.c | |
| parent | 3326a1803802aa4730d32304b003f50720996b31 (diff) | |
Linux-libre 4.8.10-gnupck-4.8.10-gnu
Diffstat (limited to 'drivers/pci/setup-res.c')
| -rw-r--r-- | drivers/pci/setup-res.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index 66c4d8f42..9526e3419 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -121,6 +121,14 @@ int pci_claim_resource(struct pci_dev *dev, int resource) return -EINVAL; } + /* + * If we have a shadow copy in RAM, the PCI device doesn't respond + * to the shadow range, so we don't need to claim it, and upstream + * bridges don't need to route the range to the device. + */ + if (res->flags & IORESOURCE_ROM_SHADOW) + return 0; + root = pci_find_parent_resource(dev, res); if (!root) { dev_info(&dev->dev, "can't claim BAR %d %pR: no compatible bridge window\n", |