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NVMe: Request I/O regions

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Calling pci_request_selected_regions() reserves these regions for our use.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This commit is contained in:
Matthew Wilcox 2011-02-01 16:24:35 -05:00
parent 2930353f9f
commit 574e8b95bc
1 changed files with 9 additions and 3 deletions
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12
drivers/block/nvme.c
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@ -1088,7 +1088,7 @@ static void nvme_release_instance(struct nvme_dev *dev)
static int __devinit nvme_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
int result = -ENOMEM;
int bars, result = -ENOMEM;
struct nvme_dev *dev;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
@ -1106,6 +1106,9 @@ static int __devinit nvme_probe(struct pci_dev *pdev,
if (pci_enable_device_mem(pdev))
goto free;
pci_set_master(pdev);
bars = pci_select_bars(pdev, IORESOURCE_MEM);
if (pci_request_selected_regions(pdev, bars, "nvme"))
goto disable;
INIT_LIST_HEAD(&dev->namespaces);
dev->pci_dev = pdev;
@ -1118,7 +1121,7 @@ static int __devinit nvme_probe(struct pci_dev *pdev,
dev->bar = ioremap(pci_resource_start(pdev, 0), 8192);
if (!dev->bar) {
result = -ENOMEM;
goto disable;
goto disable_msix;
}
result = nvme_configure_admin_queue(dev);
@ -1135,10 +1138,12 @@ static int __devinit nvme_probe(struct pci_dev *pdev,
nvme_free_queues(dev);
unmap:
iounmap(dev->bar);
disable:
disable_msix:
pci_disable_msix(pdev);
nvme_release_instance(dev);
disable:
pci_disable_device(pdev);
pci_release_regions(pdev);
free:
kfree(dev->queues);
kfree(dev->entry);
@ -1154,6 +1159,7 @@ static void __devexit nvme_remove(struct pci_dev *pdev)
iounmap(dev->bar);
nvme_release_instance(dev);
pci_disable_device(pdev);
pci_release_regions(pdev);
kfree(dev->queues);
kfree(dev->entry);
kfree(dev);